Fabric screens to make PCB's are commonplace, work well, and only
require wooden frames to hold the fabric. I have about 50 used ones in
my basement from a former manufacturer who made PCB's for hobbyists as
well as commercial customers.
Just so Balan does not get turned off totally by the challenges of
silk screen (if he has any interest left by now!).
Grant
--- In Homebrew_PCBs@yahoogroups.com, "roel_cnc" <atmelletje@g...> wrote:
> Balan
> To make a film for screen printing it must be even better (real
> black) as for pcb's beside that the fabric that is used normaly is a
> stainles steel one with incredible tension normal frame would be
> bending.
> so use the film direct on photo imag. pcb then is easyer.
> I do a lot of screen work but only on tshirts and stickers like stuff
> To develop a screen you use atleast a 500watt bulp uv at 2 meters
> distand and a special frame with rubber like back to press mesch and
> film together with vacuum pump - why the distands- the sensible
> screen is atleast 0.3mm thick - undercutting is the worst thing u can
> have
>
> the photo imag. emulsion is mostly a diazo based stuff and got a
> shelf life off 3 months max.
> so screen printing is possible but the expensive way to do.
>
> But if you like more info i'm there to help you out !!
>
> gr. Roel
>
>
>
> >
> > --- In Homebrew_PCBs@yahoogroups.com, Balan <balan3@y...> wrote:
> > > Hi
> > >
> > > I am just learning the art of PCB making. Can Someone tell me is
> it
> > possible to transfer etch resist onto a board using Silk screen and
> if
> > possible what is the difference between toner transfer methord and
> the
> > silk screen.