[TheForge] mokume from circuit boards

[James Binnion]

Many moons ago I used to make PC boards for HP (back when HP was a  
real company not another clone maker) anyway PC boards with  
components soldered to them  are fiber glass, resin (epoxy or the  
like), copper, and some of the following, nickel gold, palladium,  
tin, and lead. If they are brand new you can omit the lead and  
possibly the tin depending on the process used to make them. The  
metal layers are only about ten - twenty thou thick and the vast  
majority of that is copper. Gold layers are in the 3-5 millionths thick.

Jim
On Feb 25, 2007, at 5:22 PM, tristerk at aol.com wrote:

> No no no, there is heavy metal in computer circuit boards (lead,  
> cadmium etc) though I suppose gold would be a fairly heavy (though  
> non-toxic) metal.
>
> My point being that circuit boards are no made, primarily, of  
> metal. and the small percentage of metal that they contain is  
> likely to be toxic, at least in part. THe stuff that is not metal,  
> I suspect, is also not something one ought to be heating up and  
> breathing.
>
> But hey, just my opinion, try it and see. I'm guessing you won't  
> try it twice.
>
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James Binnion
jbin at well.com