i found(yes found under my parents barn) a 40"x38"x1/2 peice of steel. I plan to use it for my welding table. I have used grinders,sandpaper,paint stripper you name it i have tried it. To try to get the top to be bare metal so it conducts well. Though all my efforts make the top look decent it isnt very conductive. I clamped my work lead to the metal and layed a peice of exaust pipe on the table to see how it worked and it cept arcing at the clamp and then at the bottom of the pipe and made very crappy welds. any advice? also how much would a peice of metal that size regularly cost me?