Homebrew PCBs

Many years ago I built an automatic color print processor. The 
hardest part was getting a Laminar Flow across the surface of the 
paper so that it would develop evenly. I built a chamber with a lot 
of baffles that took the flow from a pump and spread it evenly 
through a slit at the top of a ramp where the paper was held. It 
worked great, but was only one sided. Doing this on both sides should 
be possible, but would take some experimentation.

Mark


At 06:12 AM 4/29/2008, you wrote:
>That's a neat idea too.
>Instead of spray etching why not "rinse etch".
>
>ST
>
>On Tue, Apr 29, 2008 at 12:41 AM, drpain1313 <yahoo@...> wrote:
>
> > Many years ago (10? 15?) when I used to do a lot more board building,
> > I had bought a low-cost etch tank that used a pump to move the etchant
> > over a ramp of sorts, where the pcb was placed.  It worked quite well
> > as I remember.  I suppose this would be called a wave etch tank.  I
> > tried to search for this type of tank with no luck.  Does someone
> > still make these?
> >
> > Also, someone asked about the laminated copper foil I sell.  The
> > website is http://www.laserpcb.com
>
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