Homebrew_PCBs

Duly noted.

Thanks, ST

Regards,

Roger



From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Stefan Trethan
Sent: Monday, December 21, 2009 11:41 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Looking for a photo etching vendor





I'd avoid the sulphuric etchants on suspicion, tin is used as resist there.
Hardly anyone uses that in a homebrew setting anyway.

CuCl eats anything short of titanium it seems.

ST

On Tue, Dec 22, 2009 at 12:33 AM, DJ Delorie <dj@... <mailto:dj%40delorie.com> > wrote:
>
> I suspect the process is the same, along with undercutting etc,
> although the chemistry might have to change. Brass works with PCB
> techniques because the brass reacts to etchant the same as copper
> does.
>
> Bronze is still a copper alloy, it might react the same too. If you
> want to mail me a small piece(like, 0.5" sq or smaller, doesn't take
> much), I can dip it in the CuCl etchant and see what it does.
>
>





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