Homebrew PCBs

This is a good question. I hadn't thought of this while considering the
possibilities of building boards at home.  Although I rarely got involved
with the solder masking of boards. I generally worked around the wet
processing steps. developing, etching, & stripping, and chemical /
mechanical cleaning, the processes that I am aware of are liquid solder mask
(typically applied by screen printing) and dry film solder mask.  Both
methods require special equipment; not something I would think would fall
into the "homebrew" category.

 

I also seen some solder masks that were applied via a plating process (i.e.
dip tank).  They were some composition of metals that were applied directly
to the traces, but again this is out of my realm of knowledge.  However..

 

I did a quick Internet search using keywords of the above items (solder
mask, dry film, screening, dip tank.) and I found the following link:
http://www.cam.org/~burt/circuits/sol-coat.html

 

This might be a viable solution for those who are making only a few boards.
The process seems time consuming, but at least its "do-able" at home.  I
especially like the idea of installing the components and performing the
soldering / solder mask steps at the same time.

 

Anyone else have solder mask techniques to share?  

 

Marty

 

-----Original Message-----
From: Markus Zingg [mailto:m.zingg@...] 
Sent: Thursday, May 22, 2003 2:27 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Creating a professional looking solder stopp mask

 

Hi all

I would like to hear from you guys if it's possible to create a
professional looking solder stop mask for PCB's. Is there a foil or
such that could be laminated and photochemically treated etched or
something? Anything possible? Marty do you have an idea?

Markus





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