Homebrew PCBs

I gave up on the fancy etching machine and opted for plastic containers and
rubber gloves.  I don't make a lot of PCBs and my time is not of much value
right now so I can afford to etch manually.

I just put ferric chloride in a small plastic container and float it in a
larger plastic container of hot water.  I like being able to inspect the PCB
during the etching, a gentle 'wipe' with a soft scrub helps move things
along.

I'm just procrastinating on the part to recycle the ferric chloride, most
likely for as long as I have fresh FC in the bottle.

Robert
:D



> -----Message d'origine-----
> De : Homebrew_PCBs@yahoogroups.com 
> [mailto:Homebrew_PCBs@...m] De la part de lcdpublishing
> Envoyé : juillet 11 2006 11:59
> À : Homebrew_PCBs@yahoogroups.com
> Objet : [Homebrew_PCBs] Baffled by a bubbler baffle - what 
> are you guys using?
> 
> 
> Hi Guys,
> 
> I am working on a new etching tank for Ferric Chloride.  I was using 
> two bubble stones for aquariums, one clogged pretty quickly and the 
> second one didn't last all that long.
> 
> So, I figured I would take a sheet of PCB board and drill a bunch of 
> holes in it as a baffle.  The I would run an air hose through 
> it and I 
> would have lot's of tiny bubbles coming up.  Nope, I got big bubbles 
> out of a couple of the holes.  I started out with .020" diameter 
> holes, then tried .035, then .045" and finally .055" holes. Not 
> working good at all.
> 
> So, I am stumped now and am wondering what you guys are using to get 
> better distribution of your air bubbles.
> 
> Chris
> 
> 
> 
> 
> 
> 
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