> We had a multi-step cleaning process that we put the raw board=20
> through before applying the laminate.  Omit any of the cleaning=20
> steps: reliability went down.  Do all of the steps: the photo=20
> exposure gauge that we used said that we were getting something
> like 6 micron resolution on the copper.  Every time.
>=20
> Yeah - Riston film really is that good.

Thanks Dwayne. That's very encouraging. As I say, my very
good and, most importantly, amenable and experienced, friend is
a commercial laminator and has all the gear. Hot and cold rollers,
vacuum table, everything. All I need to get is the film and board

Joe
--=20
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