tonight its fix any areas that the PnP did not stick too - not perfected this yet but getting close - so once I fix that they are into the ferric chloride - fresh I find is about 2 hours, used and older 3-4 hours - I added some citric acid and got back to 3 hours - sort of helps with the etching - really was not paying attention so I have to do some testing to see if the citrix really makes a difference (called Edinburgh etch when you add the citric to ferric) that is another project to check on
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