Harold and Susan Vordos wrote:

"Jordan" wrote in message
u...
Got the de-nickelling bath set up - using battery acid (35% sulfuric, as
it's heaps cheaper than the recommended 60%), plus some glycerin.

Parts I'm trying to prepare for putting on new nickel have some old
nickel, and some exposed base metal. Trouble is, the base steel is
dissolving faster than the nickel!

Thought I had to current up too high, but I can see it bubbling away
even with current turned off.

Any suggestions as to what's up?

Thanks
Jordan

Sulfuric dissolves steel----so you may have to resort to mechanical means of
removing the old plating. Right off hand, I cant think of another acid
that would work without attacking the base metal.

Hydrochloric acid doesn't seem to eat steel, at least not quickly. It's sold
as muriatic acid in gallon jugs at the hardware store. Watch out, it splashes
and will eat everything else it hits.


Harold