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Old 01-25-2005, 09:28 AM
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Shakudo Shakudo is offline
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Join Date: Nov 2003
Location: Minnesota
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the acid does eat at the sidewalls and undercuts the masked off areas to some degree. if you want to do a deep etch , the proper order of events is to etch, neutralize the metal and dry, reapply the resist to the etched walls and then put it back into the acid. this process is repeated until the proper depth is reached .
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