I've been using positive photo sensitized board. If you use a PCB
layout and print transparencies in positive it is possible to get 8
mil lines every day.
BTW I'm selling a PCB and schematic capture program at eBay
t=0&showTutorial=0&ed=1011923141&indexURL=0&rd=1
Currently the first bids stands at 1 penny.. but that may be too much
to ask.. !
--- In Homebrew_PCBs@y..., "caveteursus" <j.walton@a...> wrote:
I gave myself a Christmas present, the current edition of the
ARRL's "Hints and Kinks". The author recommends Staedler Lumocolor
318's which he fits into one of the refillable plotter pens. (That
is, he cuts the marker with a utility knife and fits it, tip and
all,
into the carcass of refillable pen. (I guess that it's kind of
messy, but that hasn't stopped any of us in the past.)
HP7475 pcb construction:
"
FAST AND EASY PRINTED CIRCUIT BOARDS
Like many hams, I prefer to build some of my gear. I started etching
my own PC boards several years ago, and I have tried
several methods. The least expensive approach is hand-drawing the
pattern on the board with a permanent marker. This can be
very time consuming and does not easily permit a good parts density,
so it wastes copper.
