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Corrosion resistance of anodized aluminum AFTER engraving

Thread starter tbw
Start date Jul 19, 2002

Status: Not open for further replies.

Jul 19, 2002

tbw

Specifier/Regulator

There are 2 major engraving processes: rotary diamond bit and laser etch. The rotary method is usually filled with a protective ink. The laser method just burns the coating, not deep enought to fill. What is the better method for longest life with outdoor exposures? The material is hard anodized (black) aluminum...