White dots after polish …

Posted: February 18, 2011 By: nali

Home Forums Buffing/Metal Finishing White dots after polish …

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    nali

    Member

    I have something strange …
    I ve already polished a few parts with great success .
    Now I m polishing parts for a car . The parts from external suppliers ( carb , fuel pump , ignition , etc ) are great .
    All the parts specific to the car brand ( AMC ) have the same problem : white dots between 1 and 3 mm wide .
    I ve sanded with die grinder and Scotch Brite , then 220 , 400 , etc up to 2000 , like usual .
    Before buffing it looks nice .
    I ve tried using only Rouge , with different speed , I always have the same problem .
    I suppose the cast is not perfect from the factory , or am I missing something ?
    Exemple : ( not perfect yet , but you have the idea )
    Thanks

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