Homebrew PCBs

On Fri, 23 Nov 2007 09:32:03 -0600, you wrote:

>Is there some simple but professional plans to build an etchant tank? I 
>mean with heater and agitation, not just a jar and manual labor:) Or is 
>one available that is professional but not too pricey? I seen one for 
>$50 and I bookmarked it. http://www.web-tronics.com/lowcosetsysw.html  
>Is that worth the $$ or could I make something with aquarium parts 
>(heater, pump, etc). I was also planning on using ferric chloride as I 
>have a bottle from RatShack from when I started getting interested in 
>this some years ago. I know there are other etchants and comments are 
>welcome on whats best but I think other than the staining and inability 
>to see your boards progress, ferric chloride is probably as good as the 
>others??

Walmart has a bread container that's inexpensive and makes a good
container for etchant.  An air pump with aquarium hose makes a good
bubbler.

You can use an aquarium heater, but you want the one that has a knob
on top that does not have stops.  You need to be able to turn this up
to broil setting for fish, mostly because the normal ones are limited
to 80 degrees F.

Harvey


>
>Thanks,
>Dave