From: Roger Johansson
Subject: Re: Printing dircetly onro PCB copper side Part II
Date: Fri, 13 Sep 2002 22:02:20 +0200
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email@example.com (Nico Coesel) wrote:
>I think this whole idea is not really worth the effort. It's much
>cheaper and easier to built an UV light and develop the PCB's in
But how about this idea:
An x-y-plotter cuts away the copper layer using a cutter tool, like a
drill but we can move it in any direction.
We set it to cut only the copper, so the cutting deep should be 1-2
tenths of a millimeter or so, to make sure the 35-70um copper layer is
We need a cutter tool which is very narrow, because we want to make
thin distances between tracks.
(this is the problem in this idea, to find a cutter head which can
handle copper and glassfiber and is maybe a tenth of a millimeter in
diameter. bigger tools are easier to find, if we can live with wider
distances between tracks)
If we can cut away copper without the usual procedure with UV-lamp,
etching, etc, we get a very fast process to make a pcb, just send the
gerber files (or whatever format is suitable) to the x-y-cutter.
In these SMD-mounting times there is seldom a need for holes, but the
same tool can easily drill holes too, just program it to cut deeper
than usual cutting.
Easy to make, just put a small electric drill, with a suitable drill
bit or cutter tool, where you would normally attach the pen.