[wrndln]

I sandblast almost all my rusted parts outside on a large tarp with a number of pieces of plywood on the tarp, as the TIP pressure blaster will quickly blow a hole in the canvas tarp if not protected. I sandblast at 80 lbs and have never seen any distorting on sheetmetal I have blasted. I shoot the metal at an angle (not perpendicular) to avoid problems with warping. I have probably sandblasted over 300 hours worth of parts. I use coveralls and a fresh air breathing system (see pictures below). Sandblasting is not a fun job, but with the coveralls to keep sand from getting into everything and the fresh air system, it isn't too bad. When I finish blasting, I scoop up the sand on the tarp and put it in 5 gallon buckets for the next blasting experience. Sandblasting can get into nooks and crannies better than any other rust removal method I have tried including electrolysis.
Rusty Nelson