🚀 go-pugleaf

	Hi,

	A few monthes ago I responded to several people asking about
the same questions as you.  I sent out info on how to make double
sided non-plated through holed pc boards.  I can do this for anyone
interested through e-mail.  I will briefly describe my technique so
you can get an idea of what it takes.  I use negative resist
techniques, I have found them to be the best for my projects. ( I have
only made about 50 boards ranging from 2" X 3" to 26" X 15" so this is
all I can comment on).  I also use a great device for exposing called
a pmt.  I think this stands for photo mask transfer, but I'm not sure.
I get these done at a blueprint shop but you can do them anywhere that
has a large exposing lab.  Usually like a photo-lab or blueprint shop.
PMT's can be made onto many colors of film including transparent.
The PMT provides a very dark surface perfect for etching.  I have
found that I can see through almost all of the plotter pen ink and
photocopier tranparencies I have ever tried.  This leads to spotty
boards, and I don;'t like spotty boards.  I have had many pmt's made
and I would say that this is definitely the best alternative.  They
can cost upwards of $20 for a rather large one, but if you go to a
good shop with a good camera man you can get PERFECT 1 to 1 shots of
your layouts.  I always accompany the people who shoot my layouts.
They tend to understand the importance of perfection when you explain
to them what you are doing. The guy that does my PMT's is pretty cool 
so we can talk about music and stuff while he works anyway.
Well there you go, I am interested in helping people get started in
this area so give me a yell at pagorm@iastate.edu I'll try to help you
with any problems or questions you might have.  
					See ya later,
							Paul Gormley
							[@:{)