Yahoo Groups archive

Homebrew PCBs

Index last updated: 2026-04-03 21:38 UTC

Message

Re: [Homebrew_PCBs] Blackening Copper

2004-05-16 by mpdickens

> > a solution composed of NaOH and H2o2?
> > You will get:
> >
> > Cu(OH) Blue in color
> > Cu(OH)2 Black in color.
> >
> > If you apply heat, the Cu(OH) will be oxidized to
> > Cu(OH)2.

> Thanks, that's worth a try....

> ST

Hey Stefan,

Did you give the above a try? If so, what were the
results?


=====
Registered Linux User No. 80253
If you use linux, get counted at: 
http://www.linuxcounter.org


	
		
__________________________________
Do you Yahoo!?
SBC Yahoo! - Internet access at a great low price.
http://promo.yahoo.com/sbc/

Attachments