{"id":3592,"date":"2020-08-03T15:16:19","date_gmt":"2020-08-03T12:16:19","guid":{"rendered":"http:\/\/9v.lt\/blog\/?p=3592"},"modified":"2023-01-30T23:29:20","modified_gmt":"2023-01-30T21:29:20","slug":"casting-electronic-trash-into-epoxy","status":"publish","type":"post","link":"https:\/\/9v.lt\/blog\/casting-electronic-trash-into-epoxy\/","title":{"rendered":"Casting electronic trash into epoxy"},"content":{"rendered":"<p>I do a lot of projects, but try to only do one or two at a time. It&#8217;s how I manage things and time doing them best and I don&#8217;t get confused. Sometimes though, my parts from various shops take more time than usual to arrive and I get stuck at a position where I don&#8217;t have anything to do.<\/p>\n<p>That&#8217;s how this project was done in a short while between other projects that are on hold.<\/p>\n<p>Anyway, first time I had such an idea was when someone brought in random electronic component mixture in a box. There were A LOT of them. Some are old Russian components, some are modern, some I never saw before. And sorting them would be just not worth the time and painful.<\/p>\n<p>There is something that can be done with them apart from dumping them all into the trash container and one thing is casting them into epoxy.<br \/>\n<!--more--><\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/jKoJdOG.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/jKoJdOG.jpg\"><\/a><\/div>\n<\/div>\n<p>First thing I did was buy some clear resin from silikon.lt. I bought the smallest quantity I could &#8211; 1.2kg (900gr resin and 300gr catalyst) and the one that allows pouring a 5cm layer at a time.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/YcEQ4g8.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/YcEQ4g8.jpg\"><\/a><\/div>\n<\/div>\n<p>Then I went ahead to select the components that I would use. I didn&#8217;t actually select any by some criteria &#8211; all I did was take a big chunk from the box and that was it. Then I noticed that because of their long legs you can&#8217;t really see anything, so I had to snip them off.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/7pkaSpw.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/7pkaSpw.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/qMmQwMu.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/qMmQwMu.jpg\"><\/a><\/div>\n<\/div>\n<p>Bought a sheet of acrylic glass and made a box mould from it then poured 1cm to make the first layer. So that all my components are lifted a bit from the bottom. Waited a few days for it to harden, dumped all the components, shook the box a bit to randomly arrange and equalize everything and then poured resin over the components.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/kZLoBnL.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/kZLoBnL.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/jhCwoxs.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/jhCwoxs.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/QtuDCQj.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/QtuDCQj.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/3DpC2C6.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/3DpC2C6.jpg\"><\/a><\/div>\n<\/div>\n<p>And then getting the bubbles out was the hardest part. I made a stand for this and blew hot air to the bottom. This made the resin a bit thinner and so the bubbles could rise to the surface more easily. Though some get trapped against the walls and components, so I used a needle to push components aside for air bubbles to get out. And using a hot air blower to remove tiny bubbles that rise to the surface was the best thing. Later I was told that adding a little bit less catalyst makes the hardening process slower and that helps to remove bubbles.<\/p>\n<p>For all mixing ratio calculations I used an online tool: <a href=\"https:\/\/resin-expert.com\/en\/guide\/epoxy-resin-calculator\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/resin-expert.com\/en\/guide\/epoxy-resin-calculator<\/a><\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/hLSNQW3.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/hLSNQW3.jpg\"><\/a><\/div>\n<\/div>\n<p>After it hardened, removing this block from the mould was surprisingly easy &#8211; the walls simply peeled off and I didn&#8217;t have to use any special measures.<\/p>\n<p>Also since I haven&#8217;t done this before, I wasn&#8217;t sure about anything I&#8217;ve been doing, but somehow everything turned out just fine. Even the first layer line is nearly invisible.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/RbWnJ9s.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/RbWnJ9s.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/qC9KjIF.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/qC9KjIF.jpg\"><\/a><\/div>\n<\/div>\n<p>Looks pretty darn cool. Now I needed to sand it a little, mainly corners, edges and the top.<br \/>\nFor that I used sandpaper with grits 400, 800, 1200, 1500 and 2500 and then polished it at the end.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/zNFY8Fj.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/zNFY8Fj.jpg\"><\/a><\/div>\n<\/div>\n<p>Okay, but a block like that, even though looks pretty cool, is kinda missing something, doesn&#8217;t it? I thought I could make the whole thing better by making a stand and adding some lights, so it looks even cooler in the dark :)<\/p>\n<p>I went ahead to OnShape &#8211; my favorite 3D modeling program and made a model which I later laser-cut.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/Tg48bpV.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/Tg48bpV.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/3qz1ICu.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/3qz1ICu.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/1tq1gRf.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/1tq1gRf.jpg\"><\/a><\/div>\n<\/div>\n<p>I didn&#8217;t do anything fancy once I cut it out &#8211; only sanded it down and applied clear lacquer.<br \/>\nAnd then installed the warm white LED lights. They need 12v to shine, so I used 4 AA batteries (6v) and a boost converter to double that voltage.<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/V7tTIeL.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/V7tTIeL.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/4y9j9GA.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/4y9j9GA.jpg\"><\/a><\/div>\n<\/div>\n<p>All in all, I think it looks pretty damn cool :)<\/p>\n<div class=\"row mt-3 mb-3\">\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/PzMSNq3.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/PzMSNq3.jpg\"><\/a><\/div>\n<div class=\"col-md-3 g-0 m-2\"><a href=\"\/blog\/filemgmt\/uploads\/Electrotrash\/nMHjSku.jpg\" rel=\"wpdevart_lightbox\"><img decoding=\"async\" src=\"\/blog\/filemgmt\/uploads\/Electrotrash\/nMHjSku.jpg\"><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>I do a lot of projects, but try to only do one or two at<\/p>\n","protected":false},"author":2,"featured_media":3601,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,751,9],"tags":[1076,210,1077,1078],"class_list":["post-3592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-hardware","category-projects","tag-casting","tag-electronics","tag-epoxy","tag-resin"],"_links":{"self":[{"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/posts\/3592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/comments?post=3592"}],"version-history":[{"count":0,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/posts\/3592\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/media\/3601"}],"wp:attachment":[{"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/media?parent=3592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/categories?post=3592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/9v.lt\/blog\/wp-json\/wp\/v2\/tags?post=3592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}