Re: Copy Cad beginners problems
Sean
OK I'm using new formula copy cad solution at 30 centigrade (88 fahrenheit)
Degreaser around 60 degrees centigrade (140 fahrenheit) as in the instructions.
Didn't use brightener at first have tried it since - still not got bright shiny finish, but I'm looking for a dull cad type finish on the larger items anyway (would do the bolts etc afterwards).
Used 1.12 amps for a part that was 8 square inches - have now changed to a 3A supply with controlled current.
Acid dip is 5% hydrochloric.
How long should I expect to dip the part to remove the grey foam that grows during plating?
As you say it does start fizzing and removing the zinc after a few minutes (less than five) - but before it has removed all the grey.
I've got yellow chromate and have tried that on parts that were plated without brightener and it rubs off and doesn't make the part shiny.
Peter
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