According to Carl Ijames :
Two parts peroxide to one part muriatic by volume. It's not fussy.

*Which* peroxide? Hydrogen peroxide? That's the most common
one, but it could be some other.

Yes, hydrogen peroxide. Here is a link to a great site on how to make
pc boards by toner transfer, and he recommends the hcl peroxide etch:
http://www.fullnet.com/~tomg/gooteepc.htm

Thanks for this -- and all that I snipped below.

Enjoy,
DoN.
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