Re: What is the best way to remove cast marks from cast aluminum?
For removing casting marks on aluminum try using a diamond impregnated fingernail file. It's easy to control and it cuts pretty fast. After you use that take some 150 - 220 grit paper and finish it up. You can also use a 6" metal file, make sure that you keep the teeth clean as they will clog pretty easy. Die grinders and cartridge rolls are great, but they will gouge the aluminum if you are not real careful.
John
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