Homebrew PCBs

On 04/03/2012 22:45, Pete wrote:
> Hi,
>
> I am trying to etch a small PCB and finding it etches unevenly leaving a
> small area of copper which is stubborn to remove. Just leaving in the
> etchant for longer starts to undermine the tracks that etched ok.

Try continuous agitation (I rock the container) in heated etchant. I put 
the small plastic container I use for etching in an outer container of 
very hot (just boiled) water. I wear rubber gloves, of course. Brushing 
the surface of the board with a soft brush is another technique. My 
technique takes about 5 minutes to etch a board.

Leon
-- 
Leon Heller
G1HSM