Homebrew PCBs

On Sat, 21 Apr 2007 22:15:16 +0200, jcarlosmor <jcarlosmor@...>  
wrote:

> I
> am very impressed why in this forum almost nobody seems interested in
> building a spray etching system. That is the disadvantage of the "home-
> brew" point-of-view. When you want to go like the pros, nobody seems
> interested. By the way, with a home-build spray ecthing system I was
> able to etch an 30x30 cm double-sided board in 4 minutes with ferric
> chloride at room temperature, with excelent resolution.


The reason is it's old news, several of us have been there, done that,  
tried that, and few are eager to go over it all again.

Look in the archives, virtually any form of spray etcher one can envision  
has been tried or used or at least discussed at great length.

Suggest a topology, and i tell you roughly what was done about it since i  
joined.

I personally tried making a rotary spray etcher, but it was way too much  
noise and hassle for what it did. At the moment i think the setup with a  
sureflow or flowjet membrane pump and either stationary or moving nozzles,  
as some already use, would be the most reasonable. But still expensive and  
complicated.

ST