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Metal finishing Q&As since 1989

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Anodising Hi-Fi Fascias

2004

Please can anyone describe the processes commonly employed to anodize hi-fi fascias in silver and black? The aluminium fascia would first be surface grained� on a flat/wide belt sander. Would there be any differences in the processes when used on 6082, 6063, or 6463 alloys (which have a decorative anodising rating of fair, good, and excellent respectively)?

We ask these questions here because we are getting conflicting answers from different anodising sub-contractors.

We are a startup OEM in the Personal Computer and Consumer Electronics industry. We design and (sub-contract) manufacture enclosures for these markets.

Tim Dickman
- St. Albans, Hertfordshire, United Kingdom

Regarding, "surface grained on a flat/wide belt sander", just be sure that the belt is not used on any other metal including steel. Dirty heavily used old belts imbed non-aluminumm particals into the surface which subsequently have to be heavily etched out which mars the grain. So keep the belts aluminum designated, fresh and clean ! Aluminum Oxide belts would be best.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

2005

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