Homebrew PCBs

>When we say nearby how nearby are we talking about?  Like in the same room 
>or just within a few feet?

     Same room, garage, basement, drafty shed, or even just nearby 
downwind. It's probably the chlorine more than anything else. I've had 
the most problem with the translucent jugs of pool acid, while the heavy 
white jugs of acid seem to keep it sealed pretty well. Also a problem 
with when I've left the etchant uncovered (duh), then it can freely get 
loose and rust things, fog optics/glass, ruin anodized finishes, etc.

     I recall a post, here or somewhere else, where someone said that 
etchant/acid fumes ate the heads off all the nails on the inside of their 
shed. I'd expect that to have taken a LOT of fumes and a substantial 
period of time.

     I'd say that the best place to store etchant would be in a plastic 
bottle with the air squeezed out - then there's those ketchup squeeze 
bottles again - in a five gallon plastic bucket with a bunch of 
neutralizer in the botton as someone mentioned, either baking soda or 
sodium carbonate from the pool store, somewhere outside, safe from prying 
children.

     Of course, that's "best", and I'm sure there's folks who just have 
it under the sink with the other more horrible corrosive poisons. Hint: 
If you can smell it, it's getting out, and you don't want that.

     If you're only working with a half pint or so, go with the squeezed 
ketchup bottle and keep it somewhere drafty (if possible), it shouldn't 
be a huge deal. I just happen to have a talent for activating Murphy's 
Law ("Anything that can go wrong, will go wrong, most likely when 
everyone is watching"), that's why I wear shoes and seatbelts.

     -Gary