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Re: Rust removal: anyone try this?
I agree that soda blasting is affective at removing paint. It will probably take care of the light rust, but not the pitting rust. As for "sand" blasting, I don't think it is the heat that warps the metal, but rather the tiny peening of the metal from the crystal impact. This peening occurs on one side of the metal at a time and thus the warping is caused (ie. stretching/shrinking due to peening). not sure on this and there are probably two camps on this issue. Either way, peening or heat, it can cause damage if done incorrectly. Done correctly, and should not be much of a problem.
As for soda, I use it on soft metal parts such as carbs and zinc plated parts that I just want to clean up. I fabricated my own siphon soda blaster that works well on the small stuff. Word of caution is to make sure you wash any part well before painting as left over soda will ruin the fresh paint.
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