Okay, so you still have to put something in the fluid. I didn't
realize that and that too would be another problem - it might beat
the PCB to death before I get the chance of letting it's magic smoke
out!
Chris
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
>
> On Fri, 23 Dec 2005 15:34:50 +0100, lcdpublishing
> <lcdpublishing@y...> wrote:
>
> >
> >
> > There is a spinning magnent under the top surface of the machine.
> >
> > You place a beaker of fluid on top of that surface and turn on
the
> >
> > machine and the fluid spins like crazy - very good fluid
agitation
> >
> > without any mechanical connections or hoses etc. The things look
> >
> > neat as hell, but I have not idea what they are called or how
> >
> > exactly they work.
>
>
> This is called a magnetic stirrer. You drop a magnet, often coated
in
> teflon, in the glass and a rotating magnetic field spins it. Often
those
> machines are combined with a hotplate.
>
>
> Your expected drawbacks are probably why this isn't used very
often for
> etching.
>
>
> ST
>