I sand blast all my parts including cabs, doors, and etc. I've never had a panel warp. Sand blasting also gets into all the nook and crannies, it's faster and cheaper than stripper, sanding or grinding.

Frank

No better smell than that of fresh paint. I've been building and painting cars/trucks for 47 years. Not gonna stop now.
http://www.coxcustomcars.com/