Homebrew PCBs

> One option is to etch in a small tray and then immediately dispose of the 
> used etchant it into a 20L drum (correctly labeled) and worry about it 
> another day when it drum is full.
>


;-)))

What happens if you neutralize the stuff, then let it dry out it an open 
tray?
What's left there? copper, in which form? and what is the result of dried 
out neutralized etchant?
what results from neutralizing acids at all? how is this ph neutral mixture 
called?

You see i don't know much about that stuff..
but i am willing to learn.......

st