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oops I also wiped out the cosmoline
The only aluminum oxide I could find was 70 grit thought that would be too course told them what I was doing they recommended fine silica sand so picked that up. I think it might work for steel but if this works out good next project is a 22 revolver and think that would destroy the aluminum receiver so still need to find some aluminum oxide if I don’t find any 200 grit what would be the highest and lowest you would recommend?
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