How to remove copy chrome???

[BPP]

I plated a part that was flash copper'ed first. Copper was flawless, looked excellent. Didnt polish copper, just rinsed and went to CC. Plated part for 30 minutes, and it looked fine in some places (mostly the rear of part) and all over the face it had pits. ( possibly bubbles? ) I had aggitation going strong, but it may have been missing the front of part, I dunno. Anyway, this is a $100 part that takes 6 hours to machine...anyway to remove plating with destroying part? Or should I just trash it now. I would love to leave the copper, but at this point I dont care.

[BPP]

aluminum
flash copper base
rinsed
1.3a- 4v 30 mins.
17sq/in. per side

( at the recomended 2.4a, the plating peels off, blisters, bubbles, and looks like garbage)

[jimcarry]

To remove Chrome and Rust
first you will need a tank large enough to hold the part a piece of stainless steel size depends on the part you are de plating a power source battery charger will work
there are different type of Acid Pickles they are explained in greater detail on pages 34 35 and 36
of the Caswells Plating Manual
WARNING ! Never pour water into Acid always pour acid into water
Pickle 1 used for mild etching before plating
to make this solution
20 parts fresh water to 1 part muriatic Acid for etching soak part for 1 to 15 minn 1 hour will remove rust from most steel

Pickle 2 also rust remover and de- plater
to make
2 parts fresh water 1 part muriatic acid
to remove Chrome hook you positive lead to you part and your negative lead to the stainless
adjust your power to 1 amp per sq inch de-plating should be complete in approx 15 to 20 minn
DO NOT use this method on Pot metals or aluminum !!!!
Caswell’s recommends’s using Anodize & Chrome Stripper to remove chrome plate
this system is less harmful to the base metal .
There are also other ways Caswells sells a scrubber wheel that works great sand or bed blasting if you do not have a bead blaster Caswells also sells an abrasive nylon wheel 6" part number NBB595 for 7.04 works great also I use al these methods
Remember when plating with copy chrome 1 amp per 32 sq inches
lets say the part is 46 sq inches
this would be 46 devided by 32 would give you 1.4375 amps round down too one amp plate out side items for 1.5 hrs

[shawnkloker]

Thanks,Jim.This is good to know.