In Reply to: Re:Baking Soda, How do you use it?? posted by Henry J on August 07, 2001 at 20:18:14:
Baking soda powder is the latest and greatest medium. It doesn't generate heat so it will not warp thin panels, it is not harmful to your health, and it is cheap in bulk. A local shop uses baking soda to strip car bodyshells.
plastic beads on repaints because it won't distort the thin aluminum panels or remove any of the base metal, only the paint.
Bead blasting engine parts such as the valve cover is a highly risky undertaking. Glass beads somehow find a way to stay in nooks and crannies no matter how well you clean the parts.
Naturally, as soon as you run the engine and oil hits the parts, the same beads happily flow out and go hunting for bearings.
If you absolutely must blast, use walnut shells.