I built my first oven and have been using it for a few weeks now. I have a wiring diagram posted with photo's of my oven build. Now I wish i would have used heavier gage steel for the walls, but it works fine, it just makes heating groans
Mine is 28 ga. (should have used at least 20) 3x3x6 and is pretty much a good size. I am currently building one half the size, 3x3x3, of the big one. Most of the parts I'm coating are automotive related. Follow the link for a look if you want.
http://s80.photobucket.com/albums/j1...20Coat%20Oven/