Is it possible/practical to have aluminum alloy components re-clear anodized? Or would it be cheaper to just look for a replacement component in better condition?

When I have looked into having things anodized there is always a very high minimum charge ($300+). I haven't found people willing to do small batches. there are home anodizing kits and lots of info on youtube about DIY but it's not cheap either. Basic kits seem to be about $500.

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

Stripping and re-anodizing aluminum alloys usually results in a mottled finish. Anodizing leaves a fairly porous surface, and you don't really remove all of the anodizing in a chemical process - it gets into cracks and crevices, so you'd have to mechanically remove it (polishing), which is labor intensive, and you might miss some spots.

30+ years of specing anodized parts in the semiconductor business and working with lots of platers (common name for those that do anodizing) taught me this.