Homebrew PCBs

lcdpublishing wrote:
> 
> 
> Hi guys,
> 
> Several of you folks have made spray etching tanks. What are you
> using for pumps?
> 
> I plan to continue using Ferric Chloride and would appreciate any
> pointers, suggestions, or other information that might be helpful in
> the making of a spray tank.
> 
> 

The Surflow pumps actually use stainless self tappers, as I found out 
the hard way. I did not try to source titanium replacement screws. 
Although it would of been much easier to just re-thread the plastic body 
with a M5 tap and replace the three self tappers with button head 
titanium bolts (Ti self tappers are rare as hens teeth). Instead I 
plastic coated steel screws and put nuts on the other side. There was a 
lot of work to make room for the nuts.
Alternatively, I believe the competing Flojet brand pumps have no metal 
parts in contact with fluid.

I posted a link the other day describing a little on the spray etcher.
Hope it answers you question. The URL again:
http://members.optusnet.com.au/~eseychell/PCB/SprayEtcher/index.html


Adam