{"id":119,"date":"2013-03-03T22:57:44","date_gmt":"2013-03-04T06:57:44","guid":{"rendered":"http:\/\/schminktronics.com\/blog\/?p=119"},"modified":"2013-03-03T23:16:20","modified_gmt":"2013-03-04T07:16:20","slug":"temporary-test-plan","status":"publish","type":"post","link":"http:\/\/schminktronics.com\/blog\/archives\/119","title":{"rendered":"Temporary test plan"},"content":{"rendered":"

I figured I really should test all this before spending a ton of money on it, so I walked around Home Depot and found a tube with a 1\/4″ outside diameter. The only magnetic thing I could find to fit inside was a #16 nail, so I bought some of those.<\/p>\n

So I cut out some 1″ square dividers, cut a 1\/4″ hole in the middle, put a couple of small holes to run wire through, and put them on the tube:<\/p>\n

\"Proto<\/a><\/p>\n

I figured it needed some extra support, so I put superglue around each of the pieces where they attach to the tube.<\/p>\n

A couple days later, I tried winding 30 gauge wire on one of them. It worked for a while, but then the end cap popped off. Next I noticed that the middle divider had been moving as well. Clearly the superglue wasn’t holding the dividers. So, I held the endcap on, put a bunch of superglue on the coil to fix that in place and let it sit.<\/p>\n

\"Proto<\/a><\/p>\n

The next day, I stripped the ends of the wire and measured the resistance. It came up right around 5 Ohms, which is just what I was shooting for. This means I can run it up to 20 V, which puts 4 Amps through there. According to a chart I found, 30 gauge wire can take up to 10 Amps for up to 10 seconds, so 4 A shouldn’t be a problem.<\/p>\n

This is a perfect use for my new power supply! I hooked the coil up to it, set it for 5 V, saw 1 A going through the coil and played with a nail in the tube. It was certainly getting sucked in, but not very strongly. So, I bumped it up to 20 V and felt the nail get pulled in more strongly. As I played with this a little more, suddenly the coil started smoking. I odor made me think it was actually the superglue burning, but I quickly shut everything down and haven’t touched it again in a week. Hopefully I’ll soon get back to this…<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

I figured I really should test all this before spending a ton of money on it, so I walked around Home Depot and found a tube with a 1\/4″ outside diameter. The only magnetic thing I could find to fit … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-119","post","type-post","status-publish","format-standard","hentry","category-em-tests"],"_links":{"self":[{"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/posts\/119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/comments?post=119"}],"version-history":[{"count":3,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":122,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/posts\/119\/revisions\/122"}],"wp:attachment":[{"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/media?parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/categories?post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/schminktronics.com\/blog\/wp-json\/wp\/v2\/tags?post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}