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Aluminum gets black from etching
I have no industry but I work at home and manufacture gift items in small scale.
can anyone solve my problem?
PROBLEM WHICH I FACE IS THAT WHEN ETCHING ALUMINUM SHEET OR PLATE IT GETS BLACK SPOTS AND SOME TIME WHOLE SHEET. I USE BELGIUM MADE 98% PURE SHEETS.
askari enterprises - Karachi, Sind, Pakistan
Try using a desmut bath. This chemical is used in anodizing in between etching and anodizing. Look at www.focuser.com/anodize.html.
- Lake Havasu City, Arizona, USA
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