> David wrote:
>
> Hi All,
>
> Has anyone tried making this?
>
> http://www.instructables.com/id/Printed-Circuit-Board-PCB-Sprayer-Machine/?ALLSTEPS
>
> It looks very interesting!!
>
I would advise against it.
Acrylic is not suitable material with CuCl.
(PE,PP, PVC are all OK)
Conical spray nozzles wont get a uniform etch.
The high pressure pump is pressure relived AFTER
going outside the tank with tiny little flimsy
connectors.
See
http://www.prototrains.com/etch2/etch2.htmlWhere his spray etcher had an accident with large
barbed fittings and hose clamps.
and imagine how much fun it would be to have that
image at 3 min 21 sec into the video on the
OUTSIDE of the tank.
If you are going to spend 100s of $ on building
one, follow Adams build. You will get good
results with the fan nozzles and motorised PCB.
If you only want small boards and spending $40
sounds like more fun, just be patient. I am
working on my write up.