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Ted Mooney, P.E. RET
Pine Beach, NJ

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Repairing mill finish on aluminum

I use 5058 aluminum sheet for a brake-formed part. Some of the parts have light scratches or rub marks. The end user likes the as-rolled mill finish, and will not allow any repairs. Any ideas how to restore the surface after smoothing out the defects?

Tom Howard
Metal stamping - Lancaster, Texas
2006

Lots of luck. No mechanical corrective action will restore to mill finish. Mass finishing with a dry organic abrasive mix product is close but no cigar, but that will leave it more of a flat dull finish. Something like glass beading without the dimples.

AF Kenton
retired business owner - Hatboro, Pennsylvania
2006

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