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Paintball gun stripping and re-anodize
I'm a anodizer and I re-anodize a paintball gun and dye orange and sealed and my client want to change the paintball gun to other color. How many times can I re-anodize a paintball gun without affecting the inside diameter?
Juan carreroanodizing - Aguada, PR, Puerto Rico
First of two simultaneous responses -- 2004
You will remove material and change the diameter every time you strip and re-anodize. How much change is allowable?

Jeffrey Holmes, CEF
Spartanburg, South Carolina
2004
Second of two simultaneous responses --
Zero times actually, Juan. But how many times you can do it without effecting the ID by enough to cause a problem depends on how critical the ID is (which is a subject I'm not familiar with) and how thick the anodizing is. Figure that a .0004" anodize thickness consumes .0002" of aluminum every time you do it.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
(Ted is available for instant or longterm help)
2004
This mostly depends on the stripping method used, and how thick the anodic coating is. Stripping will remove at least %50 of the original coating thickness, ie, if the coating is .001" to begin with, you can expect at least .0005" of subtrate removal. NAOH stripping will probably remove quite a bit more, as opposed to a Chromic/Nitric acid method.

Marc Green
anodizer - Boise, Idaho
2004
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