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20th May 2020, 02:06 AM
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#10 |
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EAAF Staff
Join Date: Dec 2004
Location: Louisville, KY
Posts: 7,272
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I don't know Detlef, I kind of agree with Wayne. I have noticed that black oxidation is much more stable and have not had problems with it for years.
Now there is a point, however, that in order to get a proper etch for a pattern, you do have to remove the black oxidation as well. |
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