I know its not much, but I saved a butt load of money by having this stuff fabbed at work. A belly-up and corners. The corners have a ton of extra material so I can trim them in anyway I want. The skid is1/4" and the corners are 3/16".
http://www.cvc.20m.com/images/skid2.jpg

another pic (corners)
http://www.cvc.20m.com/images/corners2.jpg

Looks damn good! That really makes me wish I was still in high school with access to our metal shop. We had EVERYTHING you could ever want for fabbing. Tubing benders, CNC, like 35 different welders (TIG, MIG, Arc, Oxy, Spot, Spray Arc, etc) and the metal was free for the most part! Those were the days....