You use bigger tank to etch multiple PCB's. You best bet is to go
to a shop that sells lots of various plastic containers, and
choose something there. Make sure it has a lid because you don't
want evaporation or for stuff accidentally falling in the tank.
Ferric chloride is cheap when buying in bulk. The difficult part
is making PCB holders and the air bubble system. You will need to
feed a hair hose into the tank so the lib can remain on when
etching, Otherwise the bubbles create splashes outside the tank.
Adam
mumin55555 wrote:
> here in israel, thought we are a very advanced country- it is
> sometimes very hard or impossible to find equipment for certain
> things. so, i want to built the etching tank by myself. can someone
> please explain me exacly how this "spray etcher" works???
>
> thanks a lot,
> mumin.
>
>