Homebrew PCBs

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, May 12, 2004 10:04 AM
Subject: [Homebrew_PCBs] Blackening copper


> Strange question, i know..
>
> any ideas how to chemically blacken the copper on a pcb (copper only, not
> epoxy).
>
> For optical purposes, not electric. should be even colored.

http://www.brushplate.com/brush%20plating%20chemicals.htm

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller