I did use the controls and elements from a double oven I picked up off of craigslist, but it's just to get me by until I upgrade to a PID style controller.
The box is something I found in the junkyard when I went down to buy all of my sheet metal and tubing to build the frame! It was a few inches off of my intended size, so I saved quite a bit of money. I lined the steel box with steel studs and mineral wool. The interior is a piece bent from a sheet of 20ga riveted onto the studs.
The eastwood dual voltage gun is seriously overpriced in my opinion. I started out with the hot coat they sell, which is fine for single coats and hobby work. Then I upgraded to the Kool Koat 3.0 DWP from columbiacoatings.com to do primers/clears/candies/translucents/ multiple coats in general.
I haven't offered my services up here yet, since I've been pretty busy with it locally, but I did do some valve covers for Joel's RB26 a little while ago