When I started to cast aluminum the end goal was to build a lathe from scratch following the dave gingery machine shop from scrap metal series of books. Now that I have the lathe, I won’t necessarily need to cast large parts all the time, and thus it seemed like a good idea to build a smaller furnace that would be quick to setup, would cool down quickly, and would also be portable. I was initially planning on building a small furnace from a big coffee can, but when in the paint section of a hardware store I noticed new empty paint cans for sale ( for $5 each ), and decided these would be the way to go ( more capacity and I wouldn’t have a bunch of instant coffee to drink ).
I also wanted to try my luck with lost foam casting, as it seemed like the perfect method for rapidly prototyping parts in aluminum, and this tutorial and video covers the basic tools required to do some lost foam casting.
Project Tutorial Page:
Paint Can Furnace with Accessories, Lost Foam Casting, and More!
Project Step by Step Video:
Video of Making the Paint Can Furnace with Accessories, Lost Foam Casting, and More!