That's not a bad solution at all. What's the capacity of the tank
(both in terms of etchant and size of PCB)? I couldn't find anything
that held 1 L (or quart), would etch a 6"X6" board and was at least
8" deep (to hold the tank heater). They usually held 2 or 4 quarts
and I didn't want to have that much etchant at a time.
For me, that forced the inside dimensions of the liquid volume to be
8x7x1.25. The heater and air tube displaces enough to take it under
a liter.
By the way, Circuit Specialists has a kit that looks good for $40.
It includes the tank, heater and air pump. http://www.web-
tronics.com/lowcosetsysw.html If I were to do it over, I'd probably
buy it instead of make my own. I spent about $30 on mine and took a
few hours to do it. I dont believe their 4 minute etch time claim
though...
--- In Homebrew_PCBs@yahoogroups.com, steve muirfield
<smuifield@y...> wrote:
> HI all
> ETCH TANK'S
> I have used corn flaks containers from the hard ware store these
have a
> sealed lid to keep continence dry made of white polythene and are
made by tupper ware they make
> good vertical tanks for etching and developing
> AIR AGITATION
> A fish tank air pump feeding a plastic pipe with small holes
drilled
> in it for air agitation
> As the fish tank air blocks quickly get blocked up
> PCB HOLDERS
> plastic netting is easy cut with seisers and folded in half will
make a
> good support for dipping Bord's in the etch Barth if you weave
plastic
> rod's[large plastic knitting needles] in the plastic netting you
have
> support Handel's to lift in and out of tank.
> TANK HEATING
> fish tank Emerson heater to keep tempter constant most have
adjustable thermostat for temptcher control
>
>
> Jest my two pence worth
> Captin vidio
> Fist post to grope been reading for a while
>
>
>
>
>
>
>
> ---------------------------------
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