Homebrew PCBs

John,
Sure I think Delrin is a wonderful material.
I looking forward to the fall when hopefully I'll have some time to do
my own projects.
I've been watching the discussion about mill bits and think there may be
a better solution.
I'd like to try a 2 or 4 flute ball end mill or square cut about
0.007-0.01" in carbide, I think the resulting channel that the ball will
cut into the copper will leave a smooth edge and with the idea of a
really flat surface ( may be a vacuum bed) adjusting the depth of cut so
that almost no FR4 is cut, then the wear in the cutter should be very
low. With this kind of mill bit it should be possible to do 2 trace
between normal IC pads ! The bits cost abotu $25 each but may work out
cheaper in the long run.

Has any one seen or heard of using a laser to cut the PCB copper ?
Recently I got some samples of Laser engraving and it was in aluminum,
cut was about 0.003" wide ! ideal for PCB etching I'd say !
Hans W

I cut most of the thread as it was getting far to long...