Discolored aluminum?

Furyous

All-

I have cut out a piece of aluminum for my new dash. The idea is to damascene (engine turn) the whole thing for a really trick look. It has not been an easy road.

1st I tried a wooden dowel with rubbing compound. I saw someone do this on YouTube with good results, but the dowel wouldn't track straight, so it didn't make a complete circle and ended up making some circles darker than others.

I then tried a 1/2" graphite rod, but it did not have enough bite to make a difference. I finally bought a demascening kit from Eastwood, which comes with two 1/2" bits of rubber impregnated with metal. The first few passes looked good, but after the third row the circles were darker, I am assuming from the heat. I am taking a half hour at least between rows, and I haven't changed the pressure (VERY light- one finger) or dwell time (about 7 seconds), yet every circle makes the metal dark grey. I tried to clean it with soap and water, but no change. I tried a 1:1 mixture of white vinegar to water, no change. I tried an aluminum cleaner gel, no change. At this point I am committed to this whole dash (11 rows so far), and if it comes out dark, so be it. Just thought I'd check on here to see if there was a remedy for heat discolored aluminum I have not thought of.


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BGW

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Go to the grocery store and get some ( Bartenders Friend )it's like comet and cheap. try it on some scrap and see if that won't help you out ... We use it here to clean everything from aluminum to stainless...