Re: [TCML] DUMB QUESTION OF THE DAY

[Ed Phillips <evp@xxxxxxxxxxx>]

Ed,
    The easiest way is to copper plate them, I have copper plated many 
coins, they plate well.  As for the tungsten I am told it is very 
possible, others on the list will verify.  Use distilled water, copper 
sulfate, a little sulfuric acid and a tiny bit of ammonia.  Add a very 
small pinch of sodium carbonate if you wish.  3-12 volts DC, the cathode 
hooks up to the coin, the anode is a copper wire.  If you cannot get 
copper sulfate immediately, magnesium sulfate will work just fine if you 
let it go a while to get rid of the magnesium and turn the solution 
blue.  When you get a decent layer, soldering should be easy.  You could 
also tap a hole in the dime, and put threads on your tungsten, but that 
would mean actual work.  you could also try soldering them as is, maybe 
it is not that hard (just use flux).  Let me know how it goes.

Scott Bogard."

	OK, I'll give the copper plating a try as I have all the ingredients and it's easy enough to do.  By coincidence I have about half of a 50 pound back of copper sulphate I bought many years ago for experiments with gravity cells.  As for flux, I tried several different kinds and couldn't get any of them to help wet the tungsten.

Ed


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