yes i was supprised it wasnt dissolving the clear coat... it eats everything else!. the can have is a few years old now and i think it may have lost som of its bite. I may buy another can
I got one up on the media blast, instead of using walnut shells(which is a excellent fine grit to use by the way) use baking soda, it will take all the paint off and not even scratch the metal

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When I sand my parts some I have to go as low as 220(which like giga said sucks); that's for pits and bad stains/oxidation thats in the aluminum, then I go to 320 wet, 400 wet, then 0000fine steel wool wet, then 0000 steel wool with chrome polish for a buffing agent. The chrome polish will darken the metal alittle with the oils that are in it but you can wash it off after that step and hit it gently with the 0000 steel wool after washing the polish off and it will give it more of a chrome shine

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All the aluminum parts I have taken off my bike so far I have done this way and they have a mild polish with an almost satin sheen to it, and a buffing wheel would top it off after that.