Homebrew PCBs

--- Leon Heller <leon.heller@...> wrote:
> 
> I just put ferric chloride in a small plastic container and float it in a
> larger plastic container of hot water.  I like being able to inspect the PCB
> during the etching, a gentle 'wipe' with a soft scrub helps move things
> along.
> 
> 
> I do mine the same way. Results are very good.

if you gently tap with a (jumbo) cotton swab, or wipe with a very soft brush,
you don't need to float that container anywhere.
ambient temperature is good enough, and you will be amazed with how fast the
copper 'disappears' in front of your eyes...and not the slightest risk of over
etching.
the trick is to 'remove' the used etchant off the surface of the board as fast
as it eats through the copper, really impressive. well that's what the bubbles
are for, but mechanically wiping is even more effective!


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