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Nickel Plating

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marks
Posted on Sunday, July 06, 2003 - 08:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
Hello All,

I have a few small brass pieces that were originally nickel plated.

Over time the plating has worn thru in a number of places and of course there are the usual dings and scratches.

My questions is what is the best way to remove the remaining nickel plate?

I have heard that it can be removed by a sort of reverse electrolysis which "blows" the plate off.

Thanks in advance

Mark S.
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David Stott
Posted on Monday, July 07, 2003 - 12:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
Mark,
An electroplater can remove nickel plating by reversing the plating process. You can then polish the brass or re-plate in whatever finish you want.

David Stott
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marks
Posted on Monday, August 18, 2003 - 08:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
I found the answer and it works quite well.

For cleaning brass or bronze mix one part of hydrochloric acid with two parts of water in a suitable container. For steel or iron use sulfuric acid instead.

Place a piece of lead sheet or steel bolt approx 4-5" long into the solution and connect the negative side of a car battery to this, jumper leads are good.

Wire up the piece to be cleaned to a piece of copper wire and connect to the positive jumper lead.

Dip the piece into the solution. The lead or steel will fizz. After a few seconds you will see the piece has become clean. You will need to rotate the piece as it cleans best when the rubbish can be "seen" by the lead or steel.

If you are cleaning brass or bronze the piece will end up a very pink color. Iron or steel comes out gray.

If you are replating you can plate straight over this surface.

If not it buffs off very easily leaving a good finish that only takes a couple of minutes.

Be careful about overloading the battery. I connect a battery charger to the battery when in use. If it clicks off then you are drawing too much current. The cleaner the piece becomes the less current that is drawn.

Mark S.
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Posted on Monday, March 06, 2006 - 06:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
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