First, thanks so much for sharing this information. I've taken the
liberty of quoting you on my web site and when you have a web page, I
will be very happy to link to it... Or even help you set it up.
Now: This is probably a really stupid question, but when you
say "dryfilm resist" what exactly do you mean?
--
James.
--- In
Homebrew_PCBs@yahoogroups.com, Markus Zingg <homebrew-pcb@...>
wrote:
>
> James,
>
> Regarding "keep the holes from being eched off ". That's the point
why
> you have to use dryfilm resist. The resist "tents" the holes (this
is
> called tenting) and therby protects them from being etched away.
That
> works very reliably. You just must take care to adjust the artwork
> precisely with the previousely plated holes. Once you get the hang
of
> working with dryfilm resist you realize how flexible this method is
and
> you hardly will return to anything else. I meanwhile sometimes even
> strip old base material that is coated with a photosensitive laquer
and
> laminate it therafter just because of the advantages of this
method. One
> advantage is i.e. that you can always start over if after exposing
and
> developping you discover that something is not shart enough etc. by
just
> stripping the resist away and relaminate the board.
>
> Markus