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I used caustic soda crystals dissolved in water and bathed the crank arms. I used a small brush to help it all off. It’s potent stuff though and has real potential to fuck your cranks. As pit says it also gives off some fumes. I had to do in the kitchen with the back door and windows open.
It’s fair bit of faff tbh. But there are coating places you could send the arms to and they would remove the anodising for cheap. For example there’s a place in the UK I can send the arms to and they will do it for less than £20.
Getting them to a mirror shine takes a lot of effort with various fine grades of wet and dry paper then you need access to a bench top polishing wheel.All in all probably not worth the effort but the shiney is nice
TotalShanner
Ah that would be nice if you could do that! Don't think I'll manage more commitment than a oven cleaner bath...
Re keeping them shiny, have you tried waxing them? Will also rub off, but carnauba is great stuff.
No, pretty far away from Scotland, I am in Berlin.