Bicycle part polishing?

I have a crankset that I'd like to have polished. Does anyone know of a local business that will take on a project like that? I've been searching around, but I'm only finding businesses that take on wholesale projects, not one-offs.

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Permalink Reply by Will on January 29, 2013 at 10:10am

Well, these cranks need pretty serious buffing and polishing, but I might try wet sanding with progressively finer grits, and then using something like Mother's. Thanks.

Permalink Reply by Kevin Mulcky on January 29, 2013 at 10:12am

you'll probably need to remove the anodizing first if it's an aluminum crank by using extra strength easy off or aircraft paint remover.

Permalink Reply by Steve Courtright on January 29, 2013 at 10:22am

Silicon carbide sand paper is better (than ordinary sand paper) for use on metal if you intend to wet sand.  I use SiC paper to flatten hand plane beds, for example.  It also comes in fine enough grades that I think you should be happy with the result.  You might want to try it on something other than your cranks to see if it will polish up to a sufficient shine. 

Permalink Reply by Will on January 29, 2013 at 10:25am

Thanks. They're not anodized.

Permalink Reply by mark stetson on January 29, 2013 at 7:40pm

I did these Coda arms last winter.  I sanded the anodizing off, but some folks use oven cleaner.  I just used several grits of sandpaper followed by Turtle wax rubbing compound, but Simichrome is the best stuff I've used on aluminum.

Permalink Reply by Will on January 30, 2013 at 6:21am

Nice job! It looks great, I think you've convinced me to try it myself.

mark stetson said:

I did these Coda arms last winter.  I sanded the anodizing off, but some folks use oven cleaner.  I just used several grits of sandpaper followed by Turtle wax rubbing compound, but Simichrome is the best stuff I've used on aluminum.

Permalink Reply by mark stetson on February 2, 2013 at 2:54pm

These were the easiest crankarms I've done because they have no deep grooves or valleys, and the spider is seperate from the drive side arm.  It's tedious work, but I did both of these in one night.  The worst thing to deal with is salt corrosion.  Even relatively minor looking pits take a lot of sanding to get out.  This Record crank looks OK in the picture, but after sanding it several times with little progress I gave up on making it really nice.

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