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Best Copper Cyanide plating solution

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Q. We operate a copper cyanide plating bath here.
It consists of Copper Cyanide, Rochelle Salts [on eBay or Amazon] , "free Sodium Cyanide", and Sodium carbonate.
It doesn't appear to be made up to any particular specification.
Can anyone recommend a typical bath makeup, giving a range of component concentrations?
Does this conform to any particular spec?
The copper plate is used as a mask for heat treatment of steel parts.
Thanks,

Mike Channing
Senior Chemist - Hampshire, England
2007

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A. Rather than researching some 'best' theoretical ratios at this point, I would just start with whichever printed formulation from the Electroplating Engineering Handbook [on AbeBooks or eBay or Amazon] or the Metal Finishing Guidebook ⇨
your current analysis is closest to, Mike. That should get you to an accepted, workable, solution quickest, easiest, & cheapest.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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