Homebrew PCBs

On Mon, 09 Aug 2004 16:53:25 -0000, Phil <phil1960us@...> wrote:

> I totally agree that the best solution is an etch AND storage tank,
> all in one.
>
> Unfortunately, m tank is plastic.  I (currently) use AP.  I have
> heard anecdotal evidence that it eats plastic so I dont want to store
> it in the tank.  I've kept my eye out for a glass tank but they are
> all too big (4 L/1 G) and I want to only have 1 L of etchant for
> safety sake.  I guess at some point I'll build a glass one if I dont
> find a suitable container.

What's AP? Acrylic?
I used to store the CuCl in a PP (poly-propylene) bottle.
It did form odd crystals on the outside so i changed to a glass bottle  
after a few years.
But it didn't seem the bottle was damaged.
My HCl is in a PE (poly-ethylene) bottle, and it also has crystals on the  
outside.
Also the plastic itself seems slightly damaged (after 5 years...).
I put another cut-off bottle as a sleeve over it (to keep me from touching  
the crystals
and to prevent leakage should it fail), next time i buy HCl i definitely  
don't have
them refill this bottle and get a new one instead.

I would not worry about a plastic tank for a few years, but who knows...
I have a plastic lid (printers use to be made of ABS) and a piece of  
rubber is
part of the clamp, both seems unaffected so far.

ST