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How can I speed up/ control the oxidization process of copper? Answered

I would like to force oxidization in specific areas on a copper sheet. Possible?

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rickharris
rickharris

10 years ago

Do you want it to go green (patina) or go Black (oxide?)

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orksecurity
orksecurity

10 years ago

If you want to _prevent_ oxidation in specific areas, that's easy -- apply a resist that will protect it from whatever you're using to oxidize/patinate/etch the other areas. Look at the various tips for making printed circuit boards for many ideas on what can be used as a resist.

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seandogue
seandogue

Answer 10 years ago

Interestingly enough, vinegar, aslo a dilute acid (ascetic(sp?) acid), is used in solution (buffered with salt) to make corroded copper shiny. Go figure.

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frollard
frollard

Answer 10 years ago

You need something that will speed up the reaction with the metal, but not destroy the patina -- vinegar removes the layer of patina, revealing a new layer of copper to get reacted with.