Homebrew PCBs

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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