Homebrew PCBs

You can use any good quality solvent based ink instead epoxy. You'll 
never have problems if you use FeCl3 for etching. Just take care to 
degrease the board prior to imprint and "cook" a little the ink 
after (a hair dryer is good enough for this job).
Recommended suppliers: Sericol, Coates, Marabu....


Good luck!

worka.



--- In Homebrew_PCBs@yahoogroups.com, "lanz_24" <lanz_24@y...> wrote:
> Thanks! but where can i get this ink? is it available at DIY 
shops? 
> How do I ask o it when buying? I just sa "Epoxy paint"? Is this 
the 
> same ink that has a pot life of only 5 hours?
> 
> --- In Homebrew_PCBs@yahoogroups.com, "gregben" <gregben@y...> 
wrote:
> > --- In Homebrew_PCBs@yahoogroups.com, "lanz_24" <lanz_24@y...> 
wrote:
> > > Hello!
> > > 
> > > Does anyone have an idea what kind of ink is used to make
> > silkscreen 
> > > prints on PCB's and how to use them?
> > 
> > Epoxy. Requires mixing two parts (ink and catalyst). Heat cured.
> > Screened through a tensioned polyester mesh. Photoemulsion is
> > applied to screen to form image. Emulsion up positive film 
artwork
> > is used to make the screen. Lines and text on the final PCB 
appear
> > as black lines on a clear background on the film artwork.
> > Developed screen is blocked everywhere except those areas that 
were
> > black on the artwork. Ink is squeeged across the screen to 
transfer
> > the image onto the PCB. Basically the screen printing process is
> > the same as used for textile (t-shirt) printing, but the ink is
> > tougher when cured and messier to clean-up.