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Old 04-08-22 | 11:02 PM
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verktyg
verktyg
 
Joined: Jul 2006
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Re-anodizing Parts

Re-anodizing parts. The first step is stripping the old anodized layer.

All of the parts have to be removed from the pieces to be stripped and all dirt and lubrication completely cleaned. There are several ways of stripping the anodized coating. These processes can damage some of the fine details on the part.

Aluminum anodizing creates a layer of Aluminum Oxide on the surface. If you expose virgin aluminum to the atmosphere, Aluminum Oxide will immediately start to form. That's what gives most aluminum alloys a degree of corrosion resistance.

Commercial aluminum anodizing is an electrochemical process using sulfuric acid or some organic acid. For decorative or lightly protective surfaces an anodized layer from .0001" to .001" thick is created on the surface.

The final finish will only be as smooth and shiny as the original surface. Campagnolo parts had an amazing finish prior to anodizing! Something beyond what many anodizers can produce.

One way to get around the high cost is if someone knew an anodizer or one of their customers. Many anodizers that do critical work are reluctant to mix parts because of alloy differences and possible impurities in the outside parts that could contaminate a job.

https://www.anodizing.org/page/curre...zing-processes

As someone else mentioned, you may be better off finding components with a better cosmetic finish.

verktyg
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Last edited by verktyg; 04-08-22 at 11:07 PM.
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