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DIY Electric Arc Furnace Melting Copper and Iron

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Check out the blog post:
http://sciencewithscreens.blogspot.com/2015/05/experiment-32-arc-furnace.html

This is the arc furnace I built with a friend, based mostly on The King of Random's plans. I melted some copper scrap and cast a Cu tile for my element collection. It took about four minutes to completely liquify. The sand is the standard play sand/ground cat litter mix. The white furnace body is a soft alumina fire brick.

I also tried iron. It melted, but I burned myself a bit trying to pour it, so the pour was incomplete.

Although TKOR's design is great, it still has a lot of room for improvement. For example, the furnace body and electrode holders get much too hot to handle through fireproof gloves when I try to melt iron. Check out the video documenting these important improvements here:

https://www.youtube.com/watch?v=tJxRE15Fyi8
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