My son agreed to re-anodize a friend’s paintball marker and ran into some trouble. I have since had to try and bail him out on this one. It is a problem I have not encountered before and I’m wondering it could be the aluminum alloy causing the problem. I re stripped the part polished, cleaned in Caswell degreaser, and de-smutted in Caswell de-smutting agent performing a rinse with distilled water after each step. I noticed some spots that where shinny and seemed to lie over the top of the aluminum. I tested them for continuity just to check if I had gotten the previous anodization completely off and apparently I did.
I anodized and dyed the part and the spots absorbed the dye. I have enclosed a picture (click on the above url) that demonstrates the problem. Any help or suggestions would be greatly appreciated.
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