Homebrew PCBs

Steve <steve65@...> writes:
> How much of the fumes can humans tolerate? Are the fumes harmful?

Chlorine gas is toxic.  I don't know the LD50 but I don't want to find
out the hard way either.  I've got a fume hood and vent, just a simple
bathroom vent fan and some flexible aluminum foil ductwork.

Copper salts are toxic if ingested, so don't drink your etchant either ;-)