I agree with Ballendo,
In regards to amount of hours spent building any spray etching
machine, you will save far more time (and possibly money)trying
to by off the shelf parts, rather than go through the R+D and
construction of an alternative spraying technique. The concept
may look simple, but making your contraption into a practical
work of art is a totally different ball game. Try searching the
Homebrew_PCBs archives, as there was some discussion possible
pumps to use. The brands Shurflo and Flojet come to mind, which
are available from most caravan equipment suppliers. Prices are
on the order of US$50.
Adam
ballendo wrote:
> Hello,
>
> I now you said you didn't want the pump. But I wonder why? A RULE
> brand pump for bilge duty in boats is less than 12 bucks, designed
> for occasional continuous use, designed for oil, gas, sludge, etc.
> and is cheap and easy to replace when/if necessary. Parts washer
> pumps from HF are another possibility.
>
> Container, pump, short length of tubing full of holes, problem
> solved, under 20 bucks, and likely under 4 hours. Simple, cheap,
> reliable, repairable. Works for me.
>
> Why make it harder?
>
> Ballendo
>
> --- In Homebrew_PCBs@yahoogroups.com, JanRwl@A... wrote:
>
>>In a message dated 6/16/2004 3:33:32 PM Central Standard Time,
>>atlantis7@g... writes:
>>...so that no pump is needed. Can anyone tell me how exactly these
>
> pick up
>
>>the fluid at the bottom?<<
>>is this not an oxymoronic pair of statements? Wouldn't it be
>
> a "pump" if it
>
>>"picked up the fluid at the bottom"?
>>
>>Find yourself a discarded-but-working Water-Pic. There's a neat
>
> little PUMP
>
>>in there which is at least MOSTLY all-plastic, so might do for such
>
> a thing.
>
>>