Re: Sandblasting powercoated parts
If you have an old barbecue grill lying around, try roasting it off. Throw the parts in, crank it up, and leave it for 30 minutes or so.
This technique will also remove grease and caked-on filth and of course ordinary paint. I think it will also loosen up the tough black rust, the stuff that sandblasting seems to take forever to remove. A couple of my window glass channels had that sort of rust in the bottom of the inside of the channel. My bead blaster would not touch it. After the roasting treatment, the stuff came right off in the bead blaster. Perhaps the heating and cooling causes enouigh expansion and contraction to break the rust particles loose.
Doug
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