[sdiy] Etching PCBs with non-toxic chemicals

[Adam Schabtach]

The oft-amusing hackaday.com brought this discovery to my attention:
http://www.stephenhobley.com/blog/2011/03/02/still-messing-with-forces-i-don
t-understand-the-formula/

It seems that one can etch PC boards with vinegar, hydrogen peroxide, and
salt. I've kind of sworn off etching my own boards, but this discovery
tickles me enough that I might have to try it.

--Adam