In a message dated 12/23/2005 8:35:42 A.M. Central Standard Time,
lcdpublishing@... writes:
Just a thought on this subject, perhpas there is something there
that is useful
Sadly, there is a "thing" in there that makes the liquid spin, usually a
magnet in a fuzed-shut glass tube or a molded over (teflon?) jacket, etc.
Would NOT be useful around a vertical, flat, being-etched PCB.
Too bad the etchants are such nasty liquids, as the best way would be a pump
that sprays from many tiny holes in a straight line, so the liquid would
rinse down both faces of the board, being continuously mixed until depleted, so
always the same etch-rate, all over, until done. But selection/paying-for a
pump that will handle the nasties with acceptably-little maintenance is SUCH
a drag! The bubbling idea is second-best, but getting the holes in the
"pipe" and air-pressure just right for consistently-sized and/or ideal
quantities/second bubbles is SUCH a variable hassle!
Centrifuge. JRR
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