[maxkern]

I have seen mention of walnutshells used for blasting the bod of a car. They are supposed to not leave any pitting, or warp the metal. Problem is that there is no local source for them around me. If I sandblasted the exterior, and then went over it with the DA and 180 grit paper prior to painting, do y'all think everything would be ok? I have not experinced any warpage or heating of the pannels I've blasted so far.
Max Kern

 

[Ray_Hillebrand]

Warpage is caused by the bigger sandblasters that are used in the commercial arena. I doubt a small blaster will garnish that kind of heat. Be careful with the silica sand as it is a health hazard to the lungs and have fun...

 

[Guest]

I use a product call Black Beauty that I purchase from the local tool rental store. I have used it on the under carriage and under fenders with good success. I have a small blasting setup that I got at Sears and have never seen warpage or heat buildup. I have seen a lot of static electricity though. Need to be careful around any areas where there could be fuel vapors. Good Luck.

 

[woodywrkng]

I've got a few fair sized walnut trees in my backyard. You can come by this fall and grab all ya want after they fall off. Don't wait too long though, lotsa squirrels in these parts.