tag:blogger.com,1999:blog-89658191705936093672024-03-04T22:05:31.649-08:00Praxis PlasticsMain page: PraxisWaste.com :::: Thesis for MA in Sustainable Communities at Northern Arizona University. Researching feasibility of producing parts for Precious Plastic shredders using recycled plastic :::: Personal site at LinnerDesign.com ::::
Thanks to:
Artisan Metal Works;
The Azulita Project;
Ward Davis;
NAU ECOSS CCE;
The AZ Recycling Coalition;
The City of Flagstaff Sustainability Section. ::::
Contact: tyler@praxiswaste.com or linnerdesign@gmail.comTyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.comBlogger46125tag:blogger.com,1999:blog-8965819170593609367.post-18922876537275551402019-06-06T14:22:00.002-07:002019-06-06T14:22:30.541-07:00New Website: Praxiswaste.comWe are moving up to the big leagues with a real website now! Check out <a href="http://www.praxiswaste.com/">PraxisWaste.com</a>!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-33442779522562126222019-05-12T18:46:00.001-07:002019-05-12T18:47:46.935-07:00Praxis Makes the Daily Sun!<div class="separator" style="clear: both; text-align: center;">
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https://azdailysun.com/news/local/project-aims-to-repurpose-sled-debris-around-flagstaff/article_ac260f15-9868-5555-bade-379b1f695ea2.html<br />
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Always fun to see myself in the paper!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-60093088431163767792019-05-12T18:13:00.000-07:002019-05-12T18:13:00.588-07:00Clipboards!<div class="separator" style="clear: both; text-align: center;">
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I've made over 20 now! I've developed a process now which is going pretty well. Just trying to pump out as many as possible.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-52905982281083523972019-05-10T10:38:00.000-07:002019-05-10T10:38:08.063-07:00Climbing Holds Part 3: Finishing the mold and first shots<div class="separator" style="clear: both; text-align: center;">
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I was able to trade a clipboard for some welding work for getting a nozzle on the steel plate. Additionally a plumber who came to the house offered to just fix my old Rockwell drill press so I was thankfully able to use that to drill many of the holes on the mold!<br />
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Put together, the bolts and wing nuts hold the mold together pretty well and it's quicker to use than the sheet mold which has normal hex bolts.<br />
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This is the Precious Plastic injection molder melting some HDPE. The temp controllers each run two heating elements on the insulated pipe. Plastic gets poured into the triangular hopper and after about a half hour (might have to do more) it is melted and ready to inject into the mold, on bottom. One YouTube video suggested setting the two controllers at separate temperatures, but I'll probably experiment with this a bit.<br />
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This is the second shot I got. The first one wasn't fully melted but I'm seeing that about a half hour is enough to pretty much fully melt this sled HDPE.<br />
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Aside from a hack saw, I'm not entirely sure how to take off this plug from the nozzle. It's really really thick. I think I might have to neck that down a bit to make it more manageable.<br />
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One big concern here is that the hold feels really slick right now, even despite the authentic rock texture we used on the clay version. I'll try some other plastic sources and possibly preloading the mold with sand or another texture. Not sure how it'll go but I don't see why this couldn't be used as-is on an angled degree kids' climbing gym as seen from a web image below.<br />
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<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com2tag:blogger.com,1999:blog-8965819170593609367.post-59267149637191056262019-04-24T21:03:00.003-07:002019-04-24T21:03:49.473-07:00Clipboard Prototype & Mixing HDPE Sources<div class="separator" style="clear: both; text-align: center;">
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I found that chrome clip on the side of the road as part of a water damaged cardboard clipboard. It was unusable as-is so I decided to give it a new life with some plastic. This time I wanted to do something fun looking as opposed to the standard green, so I shredded up some black can carriers and white yogurt cup tops.<br />
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Of course it's all #2 HDPE, but I found that the black can carriers didn't really melt along with the others. They must have some additive, probably a stiffener, that makes them melt at a higher temp. The white yogurt top pieces did fine.<br />
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I also got to use one of my brass stamps sold by Precious Plastic itself, but since the letters are really small I also stamped in a "2" with my Harbor Freight stamp set to mark it as #2. Involving a torch and some patience, this is not a terribly quick process. However until I get a fancy mold with inserts, it's the best I've got.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com1tag:blogger.com,1999:blog-8965819170593609367.post-61776943163526639302019-04-20T21:42:00.002-07:002019-04-20T22:03:36.851-07:00Earth Day!<div class="separator" style="clear: both; text-align: center;">
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Fran and I were happy to table with The Azulita Project at Flagstaff's 2019 Earth Day at Bushmaster Park! Here we are posing with Vice Mayor Adam Shimoni right before loading the machines back into the truck. It wasn't as hot as last year but we still both got sunburns!<br />
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Thanks to Mia Trujillo from the next table for taking our photo!<br />
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I will update this space if I can find any more publications with pictures of our table.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com1tag:blogger.com,1999:blog-8965819170593609367.post-74583068604239891842019-04-20T21:32:00.000-07:002019-04-20T21:32:02.313-07:00Climbing Holds Part 2: Finishing the Casting<div class="separator" style="clear: both; text-align: center;">
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We left off on <a href="https://plastic.linnerdesign.com/2019/04/climbing-holds-part-2-preparing-for.html">Step 5</a>, packing sand into the casting box. I came back a different day to finish.<br />
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Step 6: Gently remove the pipe from the fill hole. Pick up the upper half of the box and flip it over.<br />
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Step 7: Inspect the clay. We can see here that they jeep's tire fell apart on disassembly. It turns out there is a small undercut in the plaster mold which caught the clay and ripped it apart.<br />
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Step 7b: I did extensively trim the jeep mold in hopes the draft angles would work out, then repacked the second box. But because I missed that undercut the second one didn't work either. I decided to scrap plans for the jeep in the first round so I could at least get one out.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhipDZSu5eT2ntgi-EmPpsDPswrtUkvajlGQCDMUeidmy1zXj281jZnDFqkdbdp9T5zYPDs-qdwk9YChjlSQB_09X6OH2slplYW7PoWOXmM6XeH6jzBKvOuPs29AEnv-9YVcqmWZezXHK1P/s1600/IMG_20190419_113416212.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhipDZSu5eT2ntgi-EmPpsDPswrtUkvajlGQCDMUeidmy1zXj281jZnDFqkdbdp9T5zYPDs-qdwk9YChjlSQB_09X6OH2slplYW7PoWOXmM6XeH6jzBKvOuPs29AEnv-9YVcqmWZezXHK1P/s640/IMG_20190419_113416212.jpg" width="640" /></a></div>
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Step 8: Remove the plaster pieces and reassemble the box. Melt scrap aluminum in a foundry (I used Northern Arizona University's foundry) and pour it into the feed hole (bottom). The metal will bubble up through the vent hole (top) and then you know it's ready. Let it cool for at least a half hour.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrxy3BDkR_a_Z1SlTRns4ne7F_H8Ei3tBLowPisnAoalYQ2X3KgzR9rUuKUxZAnNv3WU3tFxpU79SFmfcdvMDbHbMnxiHsEn_s4v_p2PcoR3V9HpYyED89duNhrsZXpv2NmDr82LI5zeVn/s1600/IMG_20190419_121119308.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrxy3BDkR_a_Z1SlTRns4ne7F_H8Ei3tBLowPisnAoalYQ2X3KgzR9rUuKUxZAnNv3WU3tFxpU79SFmfcdvMDbHbMnxiHsEn_s4v_p2PcoR3V9HpYyED89duNhrsZXpv2NmDr82LI5zeVn/s640/IMG_20190419_121119308.jpg" width="640" /></a></div>
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Step 9: After the exposed aluminum is cool enough to touch, start digging the sand out. Remember that the aluminum will be HOT inside the sand, so avoid touching it below the very top 1/4"/5mm. After you've removed the sand on top, use foundry tongs to remove the casting from its box.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhea23cFxy5kUMwAupRlRsNHZ0jqBHwzbl_2kaehQ-U4ru_y-KSgha7pQLzKeVYjx9z8ayWSC7UMHKoe-PfRAFEiwUTZNLP1kW0YpTzNaVQkgQ-9fUmuLN7d198Pk32_t14bKBkJOzMDhTF/s1600/IMG_20190419_123312659.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhea23cFxy5kUMwAupRlRsNHZ0jqBHwzbl_2kaehQ-U4ru_y-KSgha7pQLzKeVYjx9z8ayWSC7UMHKoe-PfRAFEiwUTZNLP1kW0YpTzNaVQkgQ-9fUmuLN7d198Pk32_t14bKBkJOzMDhTF/s640/IMG_20190419_123312659.jpg" width="640" /></a></div>
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Step 10: Clean the sand out of the casting and break or saw off the feed tube and vent tube. Throw any aluminum waste back into the scrap pile for the next casting. Below is a photo of the other side. I was thankfully able to make the edges thicker by scraping out some sand in step 7. This will give me a little heavier-duty mold with more material to work with.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigxMTcU-9yjzmAAu-SXBw4745LPoV0Tv4KIf6uaiexAZZ4qaK9KqTpxY3_wUDXFKh0yVieDTFV9eSTJgha0H19rKNIoiJGmj-b359EM-t9AXAmUeI4IPR6p8X3-yhyz2_YHi6yC6IY1Q1m/s1600/IMG_20190419_123341395.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigxMTcU-9yjzmAAu-SXBw4745LPoV0Tv4KIf6uaiexAZZ4qaK9KqTpxY3_wUDXFKh0yVieDTFV9eSTJgha0H19rKNIoiJGmj-b359EM-t9AXAmUeI4IPR6p8X3-yhyz2_YHi6yC6IY1Q1m/s640/IMG_20190419_123341395.jpg" width="640" /></a></div>
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Next steps: I will use the angle grinder to clean up this casting's backside and make a good shelf for bolts to go through. Then I'm going to put the front side on a belt sander to make it nice and smooth. The flat side there has to mate up to a steel plate, so I'm guessing the smoother it is, the better the molding process will go. Stay tuned!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-43191199752952685122019-04-20T20:18:00.001-07:002019-04-20T20:18:39.438-07:00Innovate Waste Challenge Winner!<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_LorNGL78WP4SQz-FVhklocO0_-Vtgj2Mcn1uMbNxn9xxfJlWaIX8rfXiPukZasJ_ZONZmKSAht0oJV-yZEEi1TYjqwgzeG4Mva5VosFaOk3GNpKwmvdzxQK9yLca2CCtBydP2U8EmH3c/s1600/IMG_20190406_172147_288.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1080" data-original-width="1080" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_LorNGL78WP4SQz-FVhklocO0_-Vtgj2Mcn1uMbNxn9xxfJlWaIX8rfXiPukZasJ_ZONZmKSAht0oJV-yZEEi1TYjqwgzeG4Mva5VosFaOk3GNpKwmvdzxQK9yLca2CCtBydP2U8EmH3c/s640/IMG_20190406_172147_288.jpg" width="640" /> </a></div>
Praxis Plastics, as a team of me (Tyler Linner) as founder, Darren Bingham as business outreach coordinator, and Fran Alvarado as public relations coordinator, are ecstatic to announce that we've won $8,000 through the <a href="https://www.chooseflagstaff.com/innovatewaste">City of Flagstaff and NACET's Innovate Waste Challenge</a>.<br />
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhpLkZMD4aSJjA4i0w1o_wyA23SxPzbbIzOq0obdJ7ohrbYXdwOgenY97YwLpVks-wNDOJFxnENWcaQtthpGYa2b4qlzaAwJr6EHFcZ4Q8YmLib4WvLFDptAdLrKtyrsu2ErISZY7VAp8_m/s1600/IMG_20190406_143603425.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhpLkZMD4aSJjA4i0w1o_wyA23SxPzbbIzOq0obdJ7ohrbYXdwOgenY97YwLpVks-wNDOJFxnENWcaQtthpGYa2b4qlzaAwJr6EHFcZ4Q8YmLib4WvLFDptAdLrKtyrsu2ErISZY7VAp8_m/s640/IMG_20190406_143603425.jpg" width="640" /></a><br />
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To get this support of our city and its business incubator partner, we were invited to many "launch and learn" seminars since last fall, submitted a written proposal including business plan, and finally 'pitched' the project to a panel of four judges.<br />
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Thankfully our plastic recycling business pitch won out over two competitors! We will be working closely with NACET (Flagstaff's business incubator space) going forward to tackle the transition from thesis project to local manufacturing business. NACET thankfully offers incubator workspaces for businesses, so we are looking at funding sources for that and other important factors.<br />
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Watch this space as we progress. I'm aiming to grow this into a major producer of plastic items for Northern Arizona! It's a tall order but a lot of people are rooting for us. For instance, we plan to use the Innovate Waste funding to acquire an industrial-scale shredder and injection molder so that we can dramatically up our productivity and offer competitive prices. We are talking with other local businesses to secure both clean plastic waste streams and to find a workable product idea that we can jump into production with as soon as possible.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-46276762619343757962019-04-11T17:50:00.002-07:002019-04-11T17:50:38.043-07:00Climbing Holds Part 2: Preparing For Sand Casting<div class="separator" style="clear: both; text-align: center;">
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Sand Casting is a complex process for someone like me (and likely you) who has never done it before. Here's the quick rundown.</div>
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<img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtZapwP0lVWM44R2ZSXA9_TbPlNoRRkHRvvNZpBeRRlxrlSGfUWdfHOHTrgMljDBhZftyHsrxl2Xo199NLZd1QF3mumnUUt3cgyG1H9DBbAyzScNEfadkM0VSsnLBhlL0dlDeedTcGTLRX/s640/IMG_20190410_134735943.jpg" width="640" /></div>
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1. Remember those plaster casts of the clay parts? Flip those upside down on a board and put the bottom half of the sand box (called a flask? I'll call it a box) upside down as well. Sprinkle it liberally with baby powder as a mold release.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRSAGmojSyY-IHKQHtlzxr-GPuiYag39DhVjdag1_Vx9DDLlPGYxaPoC4wLgzIihGxoRu7539gGfjrrY6qWKlelHFv_SKSWd-plgWCBmhu_mD4p5N0rFKnDUq_OeWnsRY01y69ga3H89aE/s1600/IMG_20190410_135402709.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRSAGmojSyY-IHKQHtlzxr-GPuiYag39DhVjdag1_Vx9DDLlPGYxaPoC4wLgzIihGxoRu7539gGfjrrY6qWKlelHFv_SKSWd-plgWCBmhu_mD4p5N0rFKnDUq_OeWnsRY01y69ga3H89aE/s640/IMG_20190410_135402709.jpg" width="640" /></a></div>
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2. Pack foundry sand/casting sand in, about an inch in depth at a time. Push it down with your fingers and then pack it in with a small tamper. All the air holes need to be gone. Keep packing sand until it's up to the top, then level it. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6c7wgc-E1kENFyq-9-9ED9dR1d67X0kwLUjh_f7k_fPpK47JsdF-YysDE4MdEu6JcIH7fFtKutXQbF7oPF9kzAMjV_vEcJnCOaLdl2Bj02uFU5ulK41Hgkj2aLffUT2jImieGiKCu12w0/s1600/IMG_20190410_145652087.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6c7wgc-E1kENFyq-9-9ED9dR1d67X0kwLUjh_f7k_fPpK47JsdF-YysDE4MdEu6JcIH7fFtKutXQbF7oPF9kzAMjV_vEcJnCOaLdl2Bj02uFU5ulK41Hgkj2aLffUT2jImieGiKCu12w0/s640/IMG_20190410_145652087.jpg" width="640" /></a></div>
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3. Flip this half of the box upside down. We can see the sand is packed tightly enough that it stays in place and the female side of each plaster mold is visible and upright.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW37PeXN1ZJQy68qzz08ICzFKO4-8agjJC9qc0-FuVU3lq3LV7FCZb3ZgOpl8uw3CfY5Y6B2NANESG_T4gggQNiKTQ9UMFpS8AKDUQk0dZKiEACaXe2gFPUr0wbVS6z2kVlVLm0v-jK2YG/s1600/IMG_20190410_150158109.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW37PeXN1ZJQy68qzz08ICzFKO4-8agjJC9qc0-FuVU3lq3LV7FCZb3ZgOpl8uw3CfY5Y6B2NANESG_T4gggQNiKTQ9UMFpS8AKDUQk0dZKiEACaXe2gFPUr0wbVS6z2kVlVLm0v-jK2YG/s640/IMG_20190410_150158109.jpg" width="640" /></a></div>
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4. Stack on the second half of the box and dust liberally with baby powder again. This is a good time to plan where you will pour the aluminum. To make the pour hole I put the pipe end of a crude hammer down. In a later step we will make channels to feed the two parts. Later we will also make vent holes.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmLlnHnxpq6jRKH8Ka6UkCFyK0h0EzgqFAKl9DirbJdU8yqD1ZFS1VGMfuDbdMAYIIPkGtlIPGg9GXosyPMl8759lZwSNoDQGXpOahlkD08qRH7Vimf8JlWhy7ycHkoXd0ER2Vno4LpIeV/s1600/IMG_20190411_130511902.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjmLlnHnxpq6jRKH8Ka6UkCFyK0h0EzgqFAKl9DirbJdU8yqD1ZFS1VGMfuDbdMAYIIPkGtlIPGg9GXosyPMl8759lZwSNoDQGXpOahlkD08qRH7Vimf8JlWhy7ycHkoXd0ER2Vno4LpIeV/s640/IMG_20190411_130511902.jpg" width="640" /></a></div>
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5. With the pour/feed hole set in, pack the sand in, being careful to completely fill the plaster molds. Keep packing layer by layer until this one too is level. Now the entire box is filled with packed sand- almost 100 pounds (45 kg) of it! In the middle of course are the two plaster molds ensconced in baby powder, with a thin layer of baby powder also separating both boxes of sand.<br />
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Next Steps: I write this on Thursday. On Monday I will be pulling these apart, punching in vent holes, adding feed runners between the parts, refining the feed hole, and (with luck on my side) pouring aluminum! After that I'll be packing the other box with three other plaster molds. I'm hoping that I will be able to pour at about 9am, remove the sand, pack it into the second box, and pour again before leaving around 3pm. At that point I could walk home and do any finish work on the aluminum using a Dremel and other tools. Wish me luck!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com4tag:blogger.com,1999:blog-8965819170593609367.post-90703834913476944022019-04-11T10:16:00.000-07:002019-04-11T10:16:02.460-07:00Shredder Bracing & Some HIPS Flakes!<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSUUANAvs3tlQoSYuvBE7vGAVa6wtF-JUBKK9iD6Ziuf4Mcm8w6lLBHtaB4XI0swLBwQScl4ttM3P6504Zar3cPK7Tj6SNRMh0M3Umv0dZX0Ym-Ey6D4-7iYH3FHORhcx5ZblR2AvGyVf_/s1600/IMG_20190408_172415150.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1059" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSUUANAvs3tlQoSYuvBE7vGAVa6wtF-JUBKK9iD6Ziuf4Mcm8w6lLBHtaB4XI0swLBwQScl4ttM3P6504Zar3cPK7Tj6SNRMh0M3Umv0dZX0Ym-Ey6D4-7iYH3FHORhcx5ZblR2AvGyVf_/s640/IMG_20190408_172415150.jpg" width="422" /></a></div>
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I noticed that the elastomer in my Lovejoy coupler kept shredding itself apart, and at $30 each I do not want to keep buying them every couple work days. It appeared that it was getting damaged when binding up, and that the motor/gearbox assembly was leaning itself away from the shredder, and actually bending the table top in doing so. The little 2x4 braces on the edges helped, but I needed a heavy duty solution.<br />
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So I built an upper frame to triangulate the top of the motor with the rest of the table. This makes working with the shredder (and clearing jams) more difficult, but so far it's helping the elastomer last longer because the motor can't move as much in relation to the shredder or the table.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwK4KpXsWCYDQUtmXFXGnoQeBCuzQXBcIjmVgk7IZSJExXFpbDbHXALmnu2f8dQ9x9Z1bzXQUxfrr8XchE9VwSgbvODGM6_MMoVrgsbh8dcddIaS4eRYCcCxxUpiwOn5qb4vkOXnrjKwKy/s1600/IMG_20190408_185924872.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1153" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwK4KpXsWCYDQUtmXFXGnoQeBCuzQXBcIjmVgk7IZSJExXFpbDbHXALmnu2f8dQ9x9Z1bzXQUxfrr8XchE9VwSgbvODGM6_MMoVrgsbh8dcddIaS4eRYCcCxxUpiwOn5qb4vkOXnrjKwKy/s640/IMG_20190408_185924872.jpg" width="460" /></a></div>
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In happy news, I've shredded very nearly all of my stockpiled HIPS (High Impact PolyStyrene) printer parts! This is probably 4 gallons of the 5 gallon bucket, and it's multi-colored black, grey, and white. I'm excited to make some sheets out of it ASAP.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-45277350893033030922019-04-11T10:10:00.002-07:002019-04-11T10:10:39.704-07:00New Machines! Injection Molder and Extruder.<div class="separator" style="clear: both; text-align: center;">
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After a few missed shipments of the machines from Precious Plastic USA (not PPUSA's fault) I decided it would be easier to 'simply' drive down to Phoenix to pick them up myself. But my truck is broken for now, until I have time this summer to fix certain important things. So I borrowed my roommate's Ranger to make the drive down 5900' (1800m) in elevation and then back up. It ended up working alright and we made it back to Flagstaff with both machines for about $45 in fuel.<br /><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxVYHBvsZpecbIuPVwkRe30-e29Ked_1ZkXg8JFxUvMoOy8Gwub59VKZC6ksdr_-urUvZHFdZkztXrLV8IBdTbdTwcinXrmuACFMwvXL7q0amzdf9HVBQg0-BGjbNwHLHWxIC5miHnYg_Q/s1600/IMG_20190323_192849248.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1218" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxVYHBvsZpecbIuPVwkRe30-e29Ked_1ZkXg8JFxUvMoOy8Gwub59VKZC6ksdr_-urUvZHFdZkztXrLV8IBdTbdTwcinXrmuACFMwvXL7q0amzdf9HVBQg0-BGjbNwHLHWxIC5miHnYg_Q/s640/IMG_20190323_192849248.jpg" width="486" /></a> </div>
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The injection molder mounts on the wall, with its frame built to line up with 16" spaced wall studs for easy mounting. You can see the control board is made from recycled plastic- cool! The giant lever is what you use to inject the plastic. For storage it locks straight up. I calculated that this machine can probably inject about 27 cubic inches (442 cc) of plastic based on its piston travel.<br />
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The extruder has its own modular table. You can see the motor and small gearbox on the right.<br />
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I have not had the chance to try out either of these yet, unfortunately. But the climbing holds will be made with the injection molder.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-41226104230169977622019-04-11T09:56:00.002-07:002019-04-11T18:18:50.650-07:00Climbing Holds Part 1: Sculpting & Plastering<div class="separator" style="clear: both; text-align: center;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAuPnk_t30FbrTUb4ntk_vqMEZHl5ns7xoD3XHJ6h6gmWRQYk3wCuOkAxg76GJopUBQvRKamemZ9kWyxR3fdsaKnPop8YhOwYeorulruUCpQgy0VeBER0pY73N6CZix-RVfW9ulLTxUOnm/s1600/IMG_20190327_075730376.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAuPnk_t30FbrTUb4ntk_vqMEZHl5ns7xoD3XHJ6h6gmWRQYk3wCuOkAxg76GJopUBQvRKamemZ9kWyxR3fdsaKnPop8YhOwYeorulruUCpQgy0VeBER0pY73N6CZix-RVfW9ulLTxUOnm/s640/IMG_20190327_075730376.jpg" width="640" /></a></div>
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Regular readers may remember that I'm getting independent study credit to work with a local sporting goods store, Snow Mountain River, to create climbing holds out of recycled sleds. <br />
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A few weeks ago I enlisted the help of some friends and their friends to sculpt these climbing holds out of clay. We ended up with over 15 different holds, which had to dry overnight.<br />
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Next step was to mix up some plaster of Paris to slather all over the dry holds. The plaster then had to dry. Pro tip: put down aluminum foil before you sculpt and again before you plaster; it'll make removal easier.<br /><br /><b>Also, mix the first layer of plaster with more water than you think it needs. You want it to get into all the cracks and you definitely don't want air bubbles. The other layers can be a little thicker if necessary, but make sure that first one is almost watery!</b><br />
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The plaster will likely feel cold as it sets and the moisture evaporates out. You will also see the edges of the clay looking dark before everything is dry. Give it at least 24hrs to be sure. Then flip them over. If you can get the clay out by gentle means, go for it. I found it was stuck in there pretty well, so I tapped on a flathead screwdriver like a tiny, gentle jackhammer for hours to get all these things out. It destroyed the clay. Be very careful to chip away from the plaster as you chip, and only get small pieces at once. It's easy to chip your plaster.<br />
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Watch this space for the next part.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com8tag:blogger.com,1999:blog-8965819170593609367.post-6884926855324491462019-03-13T23:00:00.001-07:002019-03-13T23:00:11.060-07:00Shredding HIPS, Reinforcing Table x2<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPYRjkrjs34-o2XiMrturWu7Ldgntfg3DTYLMBj7mks00Is7iJ3fwUhn_eUyJNADzpYiDuxPQUZ1dtDnEK4bfDMyIVB_F7YSbr5zOzUKgDGk_3iJivYVTLJbgi8Y1Izm4-tm66RVzUSzaW/s1600/IMG_20190313_174344207.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPYRjkrjs34-o2XiMrturWu7Ldgntfg3DTYLMBj7mks00Is7iJ3fwUhn_eUyJNADzpYiDuxPQUZ1dtDnEK4bfDMyIVB_F7YSbr5zOzUKgDGk_3iJivYVTLJbgi8Y1Izm4-tm66RVzUSzaW/s640/IMG_20190313_174344207.jpg" width="640" /></a></div>
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First of all, I decided to start rocking on the giant box full of HIPS that's been sitting in the living room. High-Impact Polystyrene (aka PS-HI) is a firm plastic that's less brittle than standard PS. I've been finding it in printers, where it does a great job in many parts. However it also does a really good job of jamming my shredder! This was the worst jam yet, making me disassemble the shredder enough to pull several spacers out. You can see them sitting on the shredder.<br />
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I also looked at a recurring problem I've been having- that of ruining the elastomers in my Lovejoy coupler (red-orange thing at right). The coupler has been properly spaced but still has eaten that black elastomer spider, resulting in $30 of expense for a new spider as well as about a week of downtime before I could buy a new one.<br />
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I realized the thing HAS been going out of alignment, but not because of bad adjustment. The table has actually been flexing upward when the shredder encounters high resistance. To solve this problem and stop spending money, I threw some short 2x4 braces into the middle of the table.<br />
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Here you can see the five screws I sent through the table. These line up with the coupler.</div>
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Below is a view from underneath the table. On left is the blue piece of aluminum that braces the motor. On right of course is the shredder, and at the bottom you can see that short bit of 2x4 recycled from a part of last year's <a href="http://www.linnerdesign.com/p/bicycle-cargo-trailers.html">4P project</a>. I could send a 2x4 all the way across underneath the table, but it would be more work. We'll see if this works, and if not I'll figure something else out.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjEQMLRLppTz9Koa62Kx737wgnx2F1oBsqq7QImQarzrFVZZKk6GiOs83ZVgWudSci45cLN6dVhjJfj-T2dzkbBu950Qt1YhEp-XOfx8S8PrclL_uFRnLtn-qY8bnasjjupzmZNoQD6AWA/s1600/IMG_20190313_180833538.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgjEQMLRLppTz9Koa62Kx737wgnx2F1oBsqq7QImQarzrFVZZKk6GiOs83ZVgWudSci45cLN6dVhjJfj-T2dzkbBu950Qt1YhEp-XOfx8S8PrclL_uFRnLtn-qY8bnasjjupzmZNoQD6AWA/s640/IMG_20190313_180833538.jpg" width="640" /></a></div>
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I did a little more shredding after that and noticed that it did reduce flexing on the coupler. However the motor and gearbox tend to flex. I'm not sure how to fix that except for bracing near the bolt holes. If that became a problem I might look into steel tabletops. I don't anticipate having to do all that though. It seems like it'll work fine.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-17945875620277820512019-03-13T22:23:00.003-07:002019-03-13T22:32:47.893-07:00Tour of the Sheet Mold!And now for a quick tour of my sheet mold designed and built by <a href="https://www.artisanmetalworks.net/">Artisan Metal Works</a> of Flagstaff, AZ!<br /><b></b><br />
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<b>1. Filling the Mold.</b> Install spacers of desired thickness. Pour in appropriate volume of flakes, about 3-4 scoops from an old chip-dip container in this case.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGuZrbGgYqiZhVqTb_TnVBmC_EOQkI_FPPXiGGH0GT7fwCj-4oXjueliCzuHdFv9Ic1sLRSP-RE5eemp3jCh-sVkap8V9Xc-Ace8X1gIcRIVoNNJft7nxNUAcf4ojtTK6ntSeN1u8PWu4z/s1600/IMG_20190310_132517241.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGuZrbGgYqiZhVqTb_TnVBmC_EOQkI_FPPXiGGH0GT7fwCj-4oXjueliCzuHdFv9Ic1sLRSP-RE5eemp3jCh-sVkap8V9Xc-Ace8X1gIcRIVoNNJft7nxNUAcf4ojtTK6ntSeN1u8PWu4z/s640/IMG_20190310_132517241.jpg" width="640" /></a></div>
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<b>2. Topping it off. </b>Put the upper portion on! This is a flat sheet topped with box section tubing. When the plastic is melted, I crank the jack under the oven, which smashes this mold together until the tubing hits the spacers. At that point I know the plastic sheet is of uniform thickness.<br />
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<b>3. Melted & Cooled.</b> The excess plastic squeezes around the edges, filling up the sheet entirely. At this point the plastic has usually contracted enough to let me pull the top right off, with sheet attached. If not I can unbolt the sides to really get everything free.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnwWD3rRzWFyJKDpEzfYuNk7FTmz0A9EIQjZ7FCWpObhS0UU7RWOsJ1F5UYDsQJ2yPV5tSzy4tBDY_DeOlvmOhyphenhyphen-s3gf2IiNZjFJ6i6KxCUt_axG8huAArcTir5SEOUkXowU7DCWYv_z3R/s1600/IMG_20190310_123819206.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnwWD3rRzWFyJKDpEzfYuNk7FTmz0A9EIQjZ7FCWpObhS0UU7RWOsJ1F5UYDsQJ2yPV5tSzy4tBDY_DeOlvmOhyphenhyphen-s3gf2IiNZjFJ6i6KxCUt_axG8huAArcTir5SEOUkXowU7DCWYv_z3R/s640/IMG_20190310_123819206.jpg" width="640" /></a></div>
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<b>4. End Product.</b> Here are five sheets I've made so far! These are all made from broken sleds collected from the forest. The top one is a thinner version with my short spacers. I'm hoping to experiment with a thicker one too. These are about the size of a clipboard, but maybe not long enough to actually use for that purpose.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPWhM1tQX1Xp05_6C1gXP1iAt-295u9JoZibIFzexIPqrXbDhDoL2IG8-mGyDruY-nwSlVF_ITRkq6lAjnYiHXK2k3kMnJm4K9YAZMCofgf5tgoWPnJ42oVa3JcZtw8hcnIH_lpaYHPeFW/s1600/IMG_20190310_132659399.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhPWhM1tQX1Xp05_6C1gXP1iAt-295u9JoZibIFzexIPqrXbDhDoL2IG8-mGyDruY-nwSlVF_ITRkq6lAjnYiHXK2k3kMnJm4K9YAZMCofgf5tgoWPnJ42oVa3JcZtw8hcnIH_lpaYHPeFW/s640/IMG_20190310_132659399.jpg" width="640" /></a></div>
<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com7tag:blogger.com,1999:blog-8965819170593609367.post-17595611696255307512019-03-13T22:13:00.004-07:002019-03-13T22:26:03.162-07:00Oven Comes Home for Good!<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYsm5D5oF4EA9BhmnjtHmcGr-jGrKxbxz1aS48CH8LlZBxDXYS3pbZ6OKDdj-444uQ_eRkR29cKptFQ67PUtIHYqVp7UMzJV09HZ2jZ3LFwBzUbWBNHVrY9gx-40HAx2pUmW-k_1_agdmE/s1600/IMG_20190219_155508945.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="900" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYsm5D5oF4EA9BhmnjtHmcGr-jGrKxbxz1aS48CH8LlZBxDXYS3pbZ6OKDdj-444uQ_eRkR29cKptFQ67PUtIHYqVp7UMzJV09HZ2jZ3LFwBzUbWBNHVrY9gx-40HAx2pUmW-k_1_agdmE/s640/IMG_20190219_155508945.jpg" width="360" /> </a></div>
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Boy am I glad to have the oven finally! It came home on 19 February and I've been playing with it since. Thanks to <a href="https://www.artisanmetalworks.net/">Artisan Metal Works</a> in Flagstaff for helping me out on this. They've done great work at a price that works for my project.</div>
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Above, of course, is the sheet mold inside the oven. This is a four-part system with removable spacers as well. All very modular and nice. Check out the next post for a tour of the mold. </div>
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Here is a photo of my oven and shredder tucked away in the garage. unfortunately I don't have much room so they have to be really crammed in there! You can also see bins full of broken HDPE sleds- all Paricon Model 648's.</div>
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<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com1tag:blogger.com,1999:blog-8965819170593609367.post-62303240532887424252019-03-13T21:58:00.001-07:002019-03-30T17:16:11.138-07:00Praxis Plastics Demo's Locally! I suppose it was one month ago now, but time has been flying. I hauled my shredder over to Snow Mountain River who I'm partnered with, and put on a little demonstration for them.<br />
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It went well despite being a cold and windy February day on the mountain. I didn't get much shredding done, but was able to chat with several interested individuals. One of those individuals turned out to be Melissa Sevigny of our local NPR station, KNAU. She posted the nice, three minute long interview at the following link:<br />
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https://www.knau.org/post/nau-student-turns-broken-sleds-climbing-gear<br />
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You may notice I added some needed structural elements to the lower part of the table. This helps keep it from twisting too much with the torque of that 1-1/2hp motor.<br />
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I'm also happy to report that though it's heavy, the shredder pulls pretty well on the bike trailer! It was only a two mile ride but included a few hills.<br />
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<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-59573575592202828282019-03-05T22:34:00.001-08:002019-03-05T22:34:41.732-08:00Snow Mountain River Recycling Demo (Praxis hits the airwaves!)I did a demonstration at SMR on February 13th! The weather wasn't great so the turnout wasn't as good as I had hoped, but one person who came was Michelle Sevigny of local radio statio KNAU! Here is the resulting interview.<br />
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https://www.knau.org/post/nau-student-turns-broken-sleds-climbing-gearTyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com3tag:blogger.com,1999:blog-8965819170593609367.post-32307094455682600162019-02-09T17:31:00.000-08:002019-02-09T17:32:38.165-08:00First HDPE Shredding- Sled Shred!<div class="separator" style="clear: both; text-align: center;">
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People love to drive to Flagstaff, buy cheap sleds from Target, let their kids break the sleds in the forest, then abandon their trash in the snow. I have partnered with a local gear shop called Snow Mountain River (SMR) to recycle them into something marketable.<br />
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Today I went to grab the first batch of sleds, 50 lbs of green Paricon Model 648's originally purchased at Walmart or Target for about $10 each. Only one of all those sleds in all the colors had a recycling logo. I contacted the company on Facebook and they were not especially helpful, saying the sleds were "either" HDPE or PP. Hah. Since the one is labeled HDPE and they are all the same model I'm going to ASSUME they're all the same.<br />
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The idea was to take them home, slice them down to shredder size, and see how well they shred.<br />
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I recently got this antique Shopmaster band saw in Phoenix for this express purpose. I figure if it's been running 50 years it'll run another 50 years. Even with the dull blade it cuts through plastic quickly, but for woodworking I'll need to buy a sharp blade. Next to the saw is the stack of broken sleds.</div>
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I ended up with one large Rubbermaid bin and three 5-gal buckets full of these scraps. They were all overflowing. I blew the shredder out with the air compressor and shoved some sleds in.</div>
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Success! They don't jam as bad as the polypropylene. Overall not bad.</div>
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Ended up with about 4 gallons, I think, after about four hours. Lovely! I'll have a few of these buckets before I'm done.</div>
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I will be demonstrating the shredder at SMR in Flagstaff on Wednesday! 2-5pm. If you're in Flag feel free to stop by. I might do another demonstration for them later too, if there is much interest in the project.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-24381487071178061552019-02-09T16:31:00.002-08:002019-02-09T16:31:57.379-08:00Shredder is operational<div class="separator" style="clear: both; text-align: center;">
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I finally got some retainer clips that fit the gearbox shaft (thank you McMaster Carr) so the shredder is working again!<br />
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Of course I promptly jammed the thing with some polypropylene. This jam was the worst yet. I pulled the mesh out of the bottom, chiseled at the jumbled up plastic, tried to pull it out by installing a screw and yanking it with a vice grip. Nothing.<br />
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So I decided to go with the nuclear option: partially disassembling the shredder. I pulled the bolts out of the spacers on the cutting side. The plastic was bunched up between the blade and the spacers.<br />
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With the spacers freed I was able to knock #4 down to let the plastic out. Then I straightened them out again and replaced the bolt. Good as new, but what a pain the butt.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-56114129942288525952019-01-30T16:58:00.002-08:002019-01-30T16:58:58.127-08:00Promo Photos with Shredder<div class="separator" style="clear: both; text-align: center;">
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<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-28146919331009467022019-01-25T22:34:00.002-08:002019-01-25T22:43:01.379-08:00Shredder Updates<div class="separator" style="clear: both; text-align: center;">
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The coupler and shaft have been a big sticking point. I still haven't been able to locate clips to keep that shaft in place, but will be seeking some out ASAP. Currently the shaft works its way away from the shredder, to the point that it put pressure on the elastomer "spider" middle piece.<br />
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Squidgy spidey. I'll be getting a replacement. I don't think the metal parts have touched yet, but they will if I don't fix it.<br />
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Real quickly I'll go over another broken product I've been given. This was an old humidifier. I pulled it apart and unfortunately could not use ANY plastic from it!<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZkkxaqjoeKXVPH5xchvH1yl3QGBF5YiNQdLhYkUl7CocAKbCSlvhKnkasXd-CnGeMktpGlKx4CM5qTF6qv0OdBlXbB6qlO8nlzXOBDwX8B6BcKUgdZMjy3eIHpdr-Dqs6jUiuy8FuFDRN/s1600/IMG_20190123_182840223.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZkkxaqjoeKXVPH5xchvH1yl3QGBF5YiNQdLhYkUl7CocAKbCSlvhKnkasXd-CnGeMktpGlKx4CM5qTF6qv0OdBlXbB6qlO8nlzXOBDwX8B6BcKUgdZMjy3eIHpdr-Dqs6jUiuy8FuFDRN/s640/IMG_20190123_182840223.jpg" width="640" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjXI1YzYPFwOB31UGX8CX36kTTYpIWpk79ADQrw0TsVs4Z_VW3p5nN7m-g7aZUqzRO1NokLdF_PgyOQoxJ9Puej7kzGrnW98dAt4yQ9Z6Bh5MIeafq_Or1-Hr83hq5WtUbbL600nQE-6WL/s1600/IMG_20190123_182830280.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjXI1YzYPFwOB31UGX8CX36kTTYpIWpk79ADQrw0TsVs4Z_VW3p5nN7m-g7aZUqzRO1NokLdF_PgyOQoxJ9Puej7kzGrnW98dAt4yQ9Z6Bh5MIeafq_Or1-Hr83hq5WtUbbL600nQE-6WL/s640/IMG_20190123_182830280.jpg" width="640" /></a></div>
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They're all marked #7 "OTHER". Is it ABS? PC? PA6? No idea, and I'm not going to do a melt test just to figure it out. Bad design. What annoys me the most is that any of those plastic type abbreviations would have taken less effort to enter onto the part than "OTHER". At worst it would have take two fewer letters!<br />
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I ended up throwing the wiring, metal, and motor into my e-waste pile for recycling, so it's not all being landfilled.<br />
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Short video of the shredder and my bucket of polypropylene!<br />
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/tfvtputD1mQ/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/tfvtputD1mQ?feature=player_embedded" width="320"></iframe>Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com1tag:blogger.com,1999:blog-8965819170593609367.post-4570969965196339192019-01-18T12:30:00.000-08:002019-01-18T12:30:10.031-08:00Shredder and Motor Walkaround<div class="separator" style="clear: both; text-align: center;">
<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/LAIiar8tu4o/0.jpg" src="https://www.youtube.com/embed/LAIiar8tu4o?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
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And after that, I started shredding. Unfortunately I forgot to put keys in the coupler so that messed it up a bit. I took the shredder to the machine shop to get a key made, and brought the motor's key home to install. Ugh.Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-44516117632079671332019-01-15T14:56:00.003-08:002019-01-15T14:56:55.491-08:00Motor works!<div class="separator" style="clear: both; text-align: center;">
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I've learned a lot from this project, and with the help of Ward got it all hooked up and running. The motor does pull a lot of current, but I'm hoping it will not have issues once load is put on it.<br />
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<iframe width="320" height="266" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/sUd_IgMsRPU/0.jpg" src="https://www.youtube.com/embed/sUd_IgMsRPU?feature=player_embedded" frameborder="0" allowfullscreen></iframe></div>
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I also got a Lovejoy Coupler machined to fit the gearbox and the shredder. It has that black rubber part between the two halves, and allows the shafts to be slightly misaligned without causing bearing issues.<br />
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I took them all home and mocked them up on the table! Next is making a spacer to keep the shredder at the right height, then mounting everything up, cutting a hole in the table for plastic flakes, and mounting the controller.</div>
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<br />Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-21240800158258275582019-01-15T14:46:00.001-08:002019-01-15T14:48:39.471-08:00More Deconstruction & Product Critiques<div class="separator" style="clear: both; text-align: center;">
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I have been collecting ever more broken products to recycle. Since we didn't get but one bike at the Fix-It Clinic this past weekend I ended up taking apart a Dyson vacuum there. Below I'll detail that and some of the other items I've been pulling apart. Some have been great, some have been horrible. Some have helped me learn how to efficiently disassemble products.<br />
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First up, the <b>Dyson</b>. I didn't get photos of this one during disassembly, but partial disassembly took approximately 2 to 3 hours. All the fasteners were hidden, and half of them were just plastic clips. This made it immensely difficult to just get the thing apart. And even when it was apart I found that the big yellow ball was a two-shot mold, which means one material was injected directly into the other, making them inextricable.<br />
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Additionally, one large portion of the main frame was created with two different types of plastic glued together. not usable. Actually, none of the yellow plastic was labeled for recycling either. Horrible.<br />
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The <b>Eureka </b>Maxima vacuum offered me a few parts including the red ABS head, but I didn't get to take that one apart. I believe the <b>unknown black vacuum</b> was the one that had a WOODEN brush roll. High five for natural materials!<br />
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The <b>LG Model LUV300B</b> vacuum was a treat to work on. Every bolt was easily accessible and changing a belt or even the broken motor would have been a 15 minute job. Unfortunately I got it partially disassembled, so I finished the job.<br />
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You can see the brush motor here, held in by two or three bolts. The head cover was extremely easy to take off. There were very few plastic clips; almost everything was bolted in with Phillips head screws. The motors were large compared to the other vacuums I've taken apart. A well-made unit for sure, and probably easy to fix. Almost all the plastic pieces were marked for recycling, most being ABS or PP.</div>
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The <b>HP Photosmart C5200 Printer</b> lent a good amount of usable High-Impact Polystyrene (HIPS), some ABS, a little metal, and not much else. I will have to find a way to get rid of a few circuit boards from it too, of course.<br />
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This one started out looking promising. The entire outer shell was made of usable thermoplastics. I pulled the glass out of the scanner to hopefully use in a custom picture frame later- the third I've collected so far. But once I got into the printer things got grim.<br />
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The printer was very well-built with lots of metal, but part of the high build quality was also due to HP's liberal use of glass-reinforced ABS and polycarbonate (PC). Everything inside seemed to be made of the stuff, which is not recyclable as far as I'm concerned. Maybe someone could do it, but I'm not going to attempt it.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF_TdCBX3PISbeL0YiZeMH3U_kShqWhDaX6fETa3ZvTjanw3Me-WhTFRMFQmquixYiTfjmoLUIpt1SKKGzWOt3VoCP9ZYnLQX3WlancY9OwNaBXmfLkiKRg1Xo6O4I6jejTGBscc8IpsXV/s1600/hp+IMG_20190113_153537441.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF_TdCBX3PISbeL0YiZeMH3U_kShqWhDaX6fETa3ZvTjanw3Me-WhTFRMFQmquixYiTfjmoLUIpt1SKKGzWOt3VoCP9ZYnLQX3WlancY9OwNaBXmfLkiKRg1Xo6O4I6jejTGBscc8IpsXV/s640/hp+IMG_20190113_153537441.jpg" width="640" /></a></div>
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A few pieces were usable though. Here we have some POM rollers held by steel screws and unrecyclable roller carriers. The whole grey piece there is ABS as well. Below is a photo of all the larger usable pieces along with a small sample of the stuff I can't deal with, in red. I've gotten into a habit of marking things with a Sharpie to keep them straight.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrU8I5yJmCrRqPZEP6VCDuTTIUgdXFb5D9XBDxJrIp-eNbGNEWqgqUNqKmBo2QD-12Pho-TA8NHEzcDbku3phC4qcvKfD6tongmkme_DUaqEpYhG792GsNlHKbQ1UKCrsMvKiJygvO8M86/s1600/hp+IMG_20190113_163027929.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1340" data-original-width="1600" height="534" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrU8I5yJmCrRqPZEP6VCDuTTIUgdXFb5D9XBDxJrIp-eNbGNEWqgqUNqKmBo2QD-12Pho-TA8NHEzcDbku3phC4qcvKfD6tongmkme_DUaqEpYhG792GsNlHKbQ1UKCrsMvKiJygvO8M86/s640/hp+IMG_20190113_163027929.jpg" width="640" /></a></div>
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Is it better to have a longer-lasting product which is less recyclable, or a more disposable product which has a higher percentage of its parts made of easily recycled stuff? I feel as if there may be a middle ground at the expense of size and weight.<br />
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Next is one product that someone from Facebook dropped off. I've gone through several vacuums from FB so far, but this the most annoying. It's a <b>Shark</b> brand vac. Everything is put together with either <a href="https://en.wikipedia.org/wiki/List_of_screw_drives#Security_Torx">security torx</a> screws, glue, or some form of two-shot molding. Several parts had paint or chrome plating which needs to be removed before recycling. Some parts were not labeled for recycling.<br />
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Below is the top of the canister, disassembled. You can see that out of six parts in this assembly, only three are directly recyclable as-is. I could try to strip the chrome off with oven cleaner as diecast car customizers do, but it's probably not worth the tiny piece of ABS.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkUEZQ7F0jAhpzNrweWfxTZUUH6TpTqwp34AaK1ppOxQtIHFTEUnEjPJuuw1zqjsVH4ii00ChADw9mhDRZZaBDhq_KWUPzMR9GW64Rsfv4Xt5I-xO05JpIOvPcEKBhIOqRymKcmjtutyvj/s1600/shark+IMG_20190111_124149592.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkUEZQ7F0jAhpzNrweWfxTZUUH6TpTqwp34AaK1ppOxQtIHFTEUnEjPJuuw1zqjsVH4ii00ChADw9mhDRZZaBDhq_KWUPzMR9GW64Rsfv4Xt5I-xO05JpIOvPcEKBhIOqRymKcmjtutyvj/s640/shark+IMG_20190111_124149592.jpg" width="640" /></a></div>
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Next, the canister itself. Only a small fraction of the material is actually usable.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKWPfYdT-TEQSBicIBLejPD7axe7CBlXyp6e0MRYBIeWiB-TPTGLjdcggqW_O5WBQEkjEVKuo3F7307KrVIOxIrja0MBjbZvBRLHe8FRq39MUdGFzEuJWOXLHA7lHEPZG_VspBbSal4QLo/s1600/shark+IMG_20190111_124821084.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1327" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKWPfYdT-TEQSBicIBLejPD7axe7CBlXyp6e0MRYBIeWiB-TPTGLjdcggqW_O5WBQEkjEVKuo3F7307KrVIOxIrja0MBjbZvBRLHe8FRq39MUdGFzEuJWOXLHA7lHEPZG_VspBbSal4QLo/s640/shark+IMG_20190111_124821084.jpg" width="530" /></a></div>
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Close-up of the screen. This had to be removed from the canister by use of a steel punch, a long piece of scrap metal, and a hammer. Anyway, the plastic was molded around the steel screen, making this piece unusable.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQ9C3BeqUgHwMUWiM2o8PV-2ZZMGnK-a4NhI-alYU_gNWYadSwoycBWfaQ7y0K75Qd3m3GM5iqw0GUazbFewZ2rigv8yh5JNca3XUhub9uTBEQYZgfoOSIlgPunRmCv_hznD8dt2yQuZ7y/s1600/shark+IMG_20190111_124829361.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1287" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQ9C3BeqUgHwMUWiM2o8PV-2ZZMGnK-a4NhI-alYU_gNWYadSwoycBWfaQ7y0K75Qd3m3GM5iqw0GUazbFewZ2rigv8yh5JNca3XUhub9uTBEQYZgfoOSIlgPunRmCv_hznD8dt2yQuZ7y/s640/shark+IMG_20190111_124829361.jpg" width="514" /></a></div>
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Here's the vacuum head with its GLUED-ON lighting windows.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnhMNsyXvLYbyozdtSPNtH4CejDJgFAepQGw3Y64s2aZpHw4ot4RpTAk7nHdQc-w_XkMb_290oHXeC2IsIaPqs6doBY4xQH8g59kYb0grAMy_VPQNGnibvBX95IIT8hlzH5pLnNYtB0tta/s1600/shark+IMG_20190111_121227126.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnhMNsyXvLYbyozdtSPNtH4CejDJgFAepQGw3Y64s2aZpHw4ot4RpTAk7nHdQc-w_XkMb_290oHXeC2IsIaPqs6doBY4xQH8g59kYb0grAMy_VPQNGnibvBX95IIT8hlzH5pLnNYtB0tta/s640/shark+IMG_20190111_121227126.jpg" width="640" /></a></div>
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No, you can't peel them off.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg47UXrXTB2PgaPGhVuE_8cXAycHccAK3_oaOU6UDC4fUbICHDVlMphWi7Lzm72LqXp170Si-4gCR-4lBSn0ObOyjH3LbwszQjIERgVBC4i3mnqabs4X-B5MvZefcd4QeFWFTQT9_GVmT76/s1600/shark+IMG_20190111_121236259.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg47UXrXTB2PgaPGhVuE_8cXAycHccAK3_oaOU6UDC4fUbICHDVlMphWi7Lzm72LqXp170Si-4gCR-4lBSn0ObOyjH3LbwszQjIERgVBC4i3mnqabs4X-B5MvZefcd4QeFWFTQT9_GVmT76/s640/shark+IMG_20190111_121236259.jpg" width="640" /></a></div>
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Wire cutter time.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNXrRTXwlOs0N43zXjtCxUc8w3IdDY9HmikKXNg_LysUp1D0F-qUQWEHxZWAVPGObX3KY_dPsplGnZ9buqZU2dmGgIthp8V70AenFoXRw92kbDrV9IuJEsUHc3AhkQ5X0WAcd270E63K9k/s1600/shark+IMG_20190111_121243093.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNXrRTXwlOs0N43zXjtCxUc8w3IdDY9HmikKXNg_LysUp1D0F-qUQWEHxZWAVPGObX3KY_dPsplGnZ9buqZU2dmGgIthp8V70AenFoXRw92kbDrV9IuJEsUHc3AhkQ5X0WAcd270E63K9k/s640/shark+IMG_20190111_121243093.jpg" width="640" /></a></div>
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Last was a Panasonic cordless land line phone from a Facebook person. I think I got more usable plastic parts off this little thing than I did the entire Dyson vacuum.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxnQ0-oBcaY-rdqa8hkSiw9H4coVm8FfNVE3fJQJ0GyLOkMz-WwPpXz3QqCqW70A5V7wL7BilwhKLBbbnYPHou9y_3gICLqnfILwKqSF0CWjwiUA7xQdCW0Cpe_R4WgAX3p2HEmh5k7D5C/s1600/panasonic+IMG_20181230_202532086.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1098" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxnQ0-oBcaY-rdqa8hkSiw9H4coVm8FfNVE3fJQJ0GyLOkMz-WwPpXz3QqCqW70A5V7wL7BilwhKLBbbnYPHou9y_3gICLqnfILwKqSF0CWjwiUA7xQdCW0Cpe_R4WgAX3p2HEmh5k7D5C/s640/panasonic+IMG_20181230_202532086.jpg" width="438" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi7nMYQlkrM9hXbQkaQ7srEAGLwL78mIbi7GsX97VpTNrT42WOQwNEQTYogMWxGX8TOd9Dl6jw1bPmg-rlP55bE_3hHMF8Tbjhu7b-RvNlQWMbbsJPJq_yjAswJPhe7yEfcVKEoItdT0b4C/s1600/panasonic+IMG_20181230_204706161.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi7nMYQlkrM9hXbQkaQ7srEAGLwL78mIbi7GsX97VpTNrT42WOQwNEQTYogMWxGX8TOd9Dl6jw1bPmg-rlP55bE_3hHMF8Tbjhu7b-RvNlQWMbbsJPJq_yjAswJPhe7yEfcVKEoItdT0b4C/s640/panasonic+IMG_20181230_204706161.jpg" width="640" /></a></div>
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This glue might not come off without some work, though. Unfortunately construction like this greatly limits the item's disposal options. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQZMPLDoEqOGnJR0YSA7m7DV7hWpAbXWRra-bxx-8JQzkVtSaYhQz63wRxV4VkJEdMtJXAk3-wMXVzEf5lVrmBBPaCerSSIiKY4g9kozTAQ47TNZVkKOlC3HbRwBqgj8lhR-yzkgu57ubC/s1600/panasonic+IMG_20181230_204742545.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQZMPLDoEqOGnJR0YSA7m7DV7hWpAbXWRra-bxx-8JQzkVtSaYhQz63wRxV4VkJEdMtJXAk3-wMXVzEf5lVrmBBPaCerSSIiKY4g9kozTAQ47TNZVkKOlC3HbRwBqgj8lhR-yzkgu57ubC/s640/panasonic+IMG_20181230_204742545.jpg" width="640" /></a></div>
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Here is the e-waste. Quite a lot for such a small product.<br />
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That's all the deconstruction I have for now. Stay tuned!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com0tag:blogger.com,1999:blog-8965819170593609367.post-68712948138996492692018-12-29T16:48:00.000-08:002018-12-29T16:55:22.764-08:00Deconstructing Waste Objects & Identifying Scrap Plastics<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8BiA5drn8G3B4Fy6Xd72n6p_WVGq9-7SjeRi2h0TlYuB39d4thA5H4nu-K9Qz-II8fIgx-YmcfVTwG_zLEBuXQC0eIOVUvW-Jciuq1Xnn14ZhqwPtjkA67kjZSpLgy7mFwmAEWPixJNoW/s1600/IMG_20181229_165623062-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8BiA5drn8G3B4Fy6Xd72n6p_WVGq9-7SjeRi2h0TlYuB39d4thA5H4nu-K9Qz-II8fIgx-YmcfVTwG_zLEBuXQC0eIOVUvW-Jciuq1Xnn14ZhqwPtjkA67kjZSpLgy7mFwmAEWPixJNoW/s640/IMG_20181229_165623062-1.jpg" width="640" /></a></div>
<i>Above: all the gears from a single Epson printer-scanner-copier. Most unmarked, but probably polyoxymethylene (POM).</i><br />
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While the shredder and oven work is halted I decided to keep myself busy for a couple days by disassembling some machines from the trash. At hand were an Epson printer-scanner-copier probably purchased at Target less than five years ago and a Bissel vacuum which looked about 15 years old.<br />
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With three screwdrivers and a little TV I ripped apart these two objects which people in my development had thrown out this year. I noticed that most parts were labeled for recycling, but some oddly weren't. Here are some examples of ABS plastics I got out of the pile, and photos of the identifying markings.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgT4wLQ_9nY3P_OHKMY-mlWCuz1eFUZfYv46q-pICKJSoaI5ebwsm4tPt7PIdsSILfuOR_xTQNMERhyzYEM_G1P0iNRqsBsWNdssWUnN2sVteFXctxN-yebTUx39W04VuwYRoLtyiIlscI1/s1600/IMG_20181229_151112808.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1144" data-original-width="1600" height="456" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgT4wLQ_9nY3P_OHKMY-mlWCuz1eFUZfYv46q-pICKJSoaI5ebwsm4tPt7PIdsSILfuOR_xTQNMERhyzYEM_G1P0iNRqsBsWNdssWUnN2sVteFXctxN-yebTUx39W04VuwYRoLtyiIlscI1/s640/IMG_20181229_151112808.jpg" width="640" /></a></div>
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First up and one of the largest pieces off the vacuum was this blue brush cover. The complex stiffening ribs underneath make it hard to find information, but stuffed into one of the holes is the marker "ABS".<br />
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Next, a part of the printer. This used to hold long, thin rollers, probably to move paper. The marking here is quite obvious, and helpfully uses greater than and less than symbols to denote the plastic type. This specific one is marked >ABS KD15<. I do know that it's ABS, but the KD15 is a puzzle. I've Googled it but found no relevant results. It's probably ABS with an additive, and that additive probably isn't a toxic Brominated Flame Retardant (BFR). It may be something else toxic, but I can't find an MSDS so really have no clue.<br />
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Another smaller piece is natural colored ABS. The type is small but legible. <br />
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The printer actually had three different colors of ABS, this one being grey. I wonder why the material marker is so small when there are obviously quite large areas to potentially locate it. At about 11" (28 cm) long, there's enough real estate. <br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXYZU5FA6yyVqWBeU5PlucPXI5ggA3DzrpJVPpxzfAj7f_At82Lb6GHXUOPWE4oKicjXUwwq6f46p9AaKHsYFCnxruYkYhZJqOT81lonC8nIPOV12ry37Bmimu0gSENiwiv-BRIGXeamme/s1600/IMG_20181229_150953873.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1178" data-original-width="1600" height="470" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXYZU5FA6yyVqWBeU5PlucPXI5ggA3DzrpJVPpxzfAj7f_At82Lb6GHXUOPWE4oKicjXUwwq6f46p9AaKHsYFCnxruYkYhZJqOT81lonC8nIPOV12ry37Bmimu0gSENiwiv-BRIGXeamme/s640/IMG_20181229_150953873.jpg" width="640" /></a></div>
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Next up was the Bissel's dust collector. This consisted of several pieces stacked on top of each other. Some pieces were ABS, like this one.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWAIK8rSoI6ift4vsysmx-xGkXsj_WiD5PZ5faoQfAdvEE0kUVBSTip7H0Cj-e0poKX4RcKOBAI-7VazUjWaxGb1YzkS0vohB1gTiHVZIMc4kTL-JbvtPrzTorbShMBW-YPiLdm6aLGMVV/s1600/IMG_20181229_150942203.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWAIK8rSoI6ift4vsysmx-xGkXsj_WiD5PZ5faoQfAdvEE0kUVBSTip7H0Cj-e0poKX4RcKOBAI-7VazUjWaxGb1YzkS0vohB1gTiHVZIMc4kTL-JbvtPrzTorbShMBW-YPiLdm6aLGMVV/s640/IMG_20181229_150942203.jpg" width="640" /></a></div>
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Others were polypropylene. The bottom piece, though, is a mystery. It certainly appears to be made of the same material as the one above.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPJL6kapCMBd2VE7za9hi91yIClaye3ozJJWJhrnGlB2E6Rb6CEA6ldNVwbg-mGSimXW155Swf5ooBbJuKezn10SdwKKNluStPAeuujJMSVdNTA5_d6_GaYnXiUpr_c5yWUQXjGAeFtBrG/s1600/IMG_20181229_151011639.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1193" data-original-width="1600" height="476" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPJL6kapCMBd2VE7za9hi91yIClaye3ozJJWJhrnGlB2E6Rb6CEA6ldNVwbg-mGSimXW155Swf5ooBbJuKezn10SdwKKNluStPAeuujJMSVdNTA5_d6_GaYnXiUpr_c5yWUQXjGAeFtBrG/s640/IMG_20181229_151011639.jpg" width="640" /></a></div>
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But markings are elusive. I would assume it's ABS just like the other, but I can't afford to contaminate a bucket of ABS if it isn't.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW4Gf8QluLp9tdTH_oPFkhjTAlOC4duk_8ij4LOjoGE1EOzpOKfgo1Td9xhM3_dydB7edrBLTvxxNEblsojsm_-CmERP3kWof8ffmv4Z3ajt2JMPPgjeKLy_gQOv2pI5EaXG4O8yAYT7LK/s1600/IMG_20181229_151023597.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1600" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW4Gf8QluLp9tdTH_oPFkhjTAlOC4duk_8ij4LOjoGE1EOzpOKfgo1Td9xhM3_dydB7edrBLTvxxNEblsojsm_-CmERP3kWof8ffmv4Z3ajt2JMPPgjeKLy_gQOv2pI5EaXG4O8yAYT7LK/s640/IMG_20181229_151023597.jpg" width="640" /></a></div>
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This is why it's important to mark every piece, especially pieces this large. If and when take-apart culture is more widespread, these markings will be the difference between something being turned into something else, and being sent to the landfill.<br />
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<b>OTHER TYPES</b><br />
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I encountered multiple plastic types as well. Here is a short list of them:<br />
<b> </b><br />
<b>PC</b>- Polycarbonate, I assume. <i>Scanner light housing. </i>The only piece of PC in the entire product. Didn't collect enough to be worth recycling it.<br />
<i></i><br />
<b>PP-FR</b>- Polypropylene- Fire Resistant. <i>Printer power supply box. </i>Likely toxic. Trash.<br />
<i></i><br />
<b>PP-ND</b>- Polypropylene ??. No idea what this means, and I don't remember what it was on.<br />
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<b>PS-HI</b> (aka HIPS)- Polystyrene- High Impact. <i>Most larger printer parts.</i> A combination of brittle PS and durable polybutadiene rubberizer, it's apparently used for many consumer products. I did find an MSDS for this and it is not listed as a possible or probable human carcinogen. Good news. I'm excited to see if this will work well for my shredder.<br />
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<b>POM</b>- Polyoxymethylene. <i>Natural colored gears and small parts in printer.</i> This was a mystery to me until I looked it up. It's a high-precision, low friction plastic with good dimensional stability. I believe that means it doesn't heat and shrink much. Most gears are not marked >POM<, but just like soda bottle caps it's just about a foregone conclusion so I'm going to go with it. I'm also excited to experiment with this one but will need many more gears to be able to make anything.<br />
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So far that's it for the deconstruction. I sent out a couple calls for plastic and machine donations. A few people have offered more printers and vacuums. The vacuums could be a pretty good source of ABS and large PP pieces. Wait 'n' see, I guess!Tyler Linnerhttp://www.blogger.com/profile/14444347113787728471noreply@blogger.com10