Homebrew PCBs

--- Matthew Smith <matt@...> wrote:


> You want either a magnetic drive pump (polypropylene would 
> probably be a suitable material) or a peristaltic pump 

The issue I had with the DynaArt setup was that it used a
particular size and style of pump, so selection for alternates
was limited.  The primary failure mode was the bushing bearings.
They would just disintegrate after a few uses.  Rinsing with
fresh water didn't help.  I gave up.

The idea I was going to pursue is like photographic developers
use, where a cylindrical tank is partially filled and rotated
on a set of rollers.  Experimentation would reveal if more even
etching would occur if the board was secured or loose in the tank.

Just a rotating variation of a rocking tray, I guess.  Trying to 
get away from pumps, too many issues.

Mark B.
Albuquerque, NM