I agree with Andrew...all the stuff I have seen, and used, have had an oven drying step before UV curing.
--- In Homebrew_PCBs@yahoogroups.com, "Andrew" <a_wake@...> wrote:
>
> Bob,
>
> Do I understand correctly that this process does not include a drying step? With other processes I believe you apply the liquid, dry it in an oven, and then expose it with the artwork. It sounds like the problem you are having is dealing with the wet liquid. Wonder what would happen if you let it dry first? Would it still develop under the UV?
>
> --- In Homebrew_PCBs@yahoogroups.com, "storan4wd" <bob.balderson@> wrote:
> >
> >
> > > But you COULD put an image on it, and have the soldermask only placed
> > > where you want it. Then just expose the whole board. Wouldn't that be
> > > easier?
> > >
> > > Kerry
> > >
> > You're right, that would certainly be possible but it's another time consuming procedure to make the screen and it uses limited shelf life chemistry. I have tried it for component legends but with only limited success (I found it very difficult coating the mesh evenly and at the right thickness).
> >
> > Bob
> >
>