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Subject: Re: [Homebrew_PCBs] Sprayer pressure - pumps

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2005-03-16

On Wed, 16 Mar 2005 20:51:41 +1100, Adam Seychell
<a_seychell@...> wrote:

>
> When I was designing the tanks, I always had the intention of it living
> outside, since something this big would take up to much valuable garage
> space. Installing it somewhere like the bedroom or kitchen is not
> something even I would attempt. Because PCB fabrication is a wet process
> , it seemed only natural to make the equipment survive the outdoors.
> All metal fasteners, hose clamps, mounting brackets, et, are stainless
> steel/or aluminum, while all the plastics are UV resistant, and the wood
> has five coats of paint Maximum PCB panel size is A4 (300x200mm).
> BTW, there is still more work to do on the PTH chemistry and many other
> little problems to fix.


Well, it seems _very_ complex from the pictures (and PTH explains some of
it).

Way more than i need for now, for sure.

What i meant with the weather was mainly temperature, you couldn't leave
something like that outdoors in the winter here, it would freeze. (not to
speak of how hard it would be to etch a PCB with snow on the unit).

I assume the climate where you live is different and allows that.

Very nice work though...
How is the uniformity of the spray-etch?
What's your etch time?

ST