Toner as PCB resist (perilously close to OT)

[Dennis Boone]

 > A while ago (late '80s, early '90s) I heard a suggestion for using
 > copier toner as PCB etch resist (draw on paper, copy onto overhead
 > transparencies, iron onto the PCB).  Now that PCB layout software is
 > available easily, as are laser printers, has anyone here tried it? I'm
 > wondering how well it would resolve for finer-pitch DIP/SIP packages,
 > or if the etchant would eat through the traces.

A friend and I are trying to build some surface mount boards using
this concept right now.  We're working from notes here:

	http://www.fullnet.com/u/tomg/gooteepc.htm

It's tricky at best.  We seem to be having trouble with getting the
toner to stick where single lines are a ways from other stuff.  I'm
looking into alternate papers, different printer, etc.

We haven't tried etching yet, so I can't speak to whether we'll have
problems with the etchant eating into the fine lines.

De