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Corrosion on rims... Repair?
Hey guys,
Have a set of MTB wheels that the rims(aluminum) have some corrosion around where the spokes fasten(nipples). It has a chalky white residue that seems to creep under the existing paint and makes the paint peel off.
What is the best way to clean them up and get them ready for a couple coats of paint?
Thanks !!! 
scrap the rims.

a spoke pulling out of a rim is not a safe occurrence.  

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