Homebrew PCBs

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