[sci.electronics] Printed Curcuits

NCOYNE@ESOC.BITNET (06/05/91)

 Nick Coyne Darmstadt Germany


Hi
A friend and myself are engadged in a small electronic project and we need
to produce a number of identical Printed Curcuit Baords.
We have been using the old etch resist pen and transferes for the one off
projects before, but this requires a greater number and a more profesional
end product.
With the aid of a P.C. printed curcuit program we have been able to produce
the front and back pcb patterns printed on paper. The only problem is to
get the right printer scalling it prints out 2/1 scale.
We have found a company that will produce a P.C.B with a 1/1 copy but
they can't do it with a 2/1 copy.
ultimatley we would like to make our own P.C.B's and would apreciate
some advice on how to make a photo mask for the U.V exposure
I think that a special photo paper must be used but I am not sure.
If someone could give me the details of equipment needed and brand names
then I am willing to give it a go.
Please give me your technical support.
Thanks Nick
NCOYNE@ESOC.BITNET

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