[blackcote]

Anodizing will dull the finish from original slightly, So will leaving it in the cleaner too long, but the finished piece should still be satisfactory with no final touchup being needed if everything's done right. It's likely something wrong with one of the many parameter's that are involved with anodizing. I'd venture a guess that you ano'd too long... and you getting some dissolution... but that's just a guess based on what we've had issue with. In our case what actually happened was we got so much acid drag out that we started to get this film after sealing that really didn't rub off with fingers. We noticed that we didn't get it with the other colors that we were anodizing less than the black, so we tried less time on the black part an viola no need to wipe 'em down or buff 'em off. We continued that way for quite some time until I did a current density check with a 1 sq ft pc. and noticed the volts were starting out way too high. Added acid to bring it back down and the times, amps, and volts were back in check.