Homebrew PCBs

I do not know if the silk screen emulsion will stick and protect copper.  

I think resolution would be OK.  Many years ago I was silk screening text
and graphics with 7 mil lines.  The limitation was the silk screen mesh.

Bertho

 

From: David  Sent: Saturday, April 14, 2012 21:52



Leon / Andrew,

Sorry, I dont think i made myself clear, I was suggesting the emulsion used
in silk screen printing to be put directly onto the PCB using Craig's
spinning method, not through a mesh, oven dry it, then expose using UV and
circuit pattern on a transparency or tracing paper as normal, the exposed
area would remain and the circuit washed off with water ready for etching,
if that makes sense! I was also wondering if the resist would stand up to
the etching chemicals? the main reason is, this type of emulsion is a lot
cheaper and easier to get than the dedicated PCB stuff! 

David





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