Bill is right sand can heat the metal up and cause it to warp. So can a few other medias......the Mustang I'm working on now was warped using aluminum oxide....idiots!
Not sure how far you're willing to travel but there's a guy I use sometimes up here in Hillsborough who used baking soda. Place is called Final Strip and you'd want to talk to Richie.
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--==RPM Resto & Custom==--
1989 IROC-Z Media Coverage:
Chevy High Performance - Readers Rides 4/03
GM High Tech Performance - Tech Article 3/06
Chevy Rumble - Tech & Feature Articles November 2006
Auto Restorer Magazine - Feature Article 5/11
SkinAndSteel.com
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