I had the need of an etch tank and all the
off-the-shelf units were .5 or 1 Gallon.  I really did
not want that much etchant to deal with so I made a
tank out of acrylic sheet material.  It holds a 8"x6"
board, an aquarium heater and hose bubbler while only
requiring 1 quart of etchant.  Perfect.  

I used fusing cement from TAP
http://www.tapplastics.com/shop/product.php?pid=130&
and it came out great.  Others have said "bad idea"
the etchant will attack the acrylic but I leave the
etchant (ammonium persulfate) in the tank and over 9
months, there hasn't been a single problem.  I believe
that CuCl etchant will be more agressive against
acrylic, though.

Phil

--- "Alan B. Pearce" <A.B.Pearce@rl.ac.uk> wrote:
> >have a look what I find, from garage:
> >a bottle heater, 300W and 50 to 110C temperature
> setting.
> >full plastic and heating surface is taflon
> >
> >http://www.webjb.org/pub/img/05133/000_0964.JPG
> 
> Hmm, what diameter is it? I'm just wondering what
> size bottle it was
> designed to heat. Unless making very small PCBs all
> the time, I suspect it
> would be a bit small for many things.
> 
> 
> >next thing is how to make fluid mxing.
> >I think over and over, made a conclusion:
> >mechanical shaking is the easiest way.
> >I need to build a shaking table, that all.
> 
> Put some plastic hose in the bottom and bubble air
> through it? May be easier
> than having a shaking table.
> 
> -- 
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