[sdiy] Cupric Chloride etchant?

[David G. Dixon]

> Hi guys, has anyone used Cupric Chloride for etching their PCBs?
> 
> Relevant link: http://www.diyblog.net/2009/11/21/cupric-chloride-as-a-pcb-
> etchant/

I've done all my boards this way.  It's brilliant.  I keep a bottle of green
solution in my garage, and when I'm ready to etch, I bring it in the house,
pour some into a pyrex dish, and do it in the laundry-room wash-basin.
About every third or fourth time I add a few splashes of hydrochloric
(muriatic) acid, and each time I add a splash of peroxide.  Even when the
solution is stone cold, etching is still complete in about 3-5 minutes.  I
just wear a rubber glove and swish the board around with my hand.

I'm still using the same solution I started with almost a year ago.