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PREPARING
THE SCREEN FOR PRINTING
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A) WASHING
OUT THE STENCIL
- After the
screen is exposed, remove the positive.
- Rinse the
print side of the emulsion, then the squeegee side,
and allow to soak for 30-60 seconds.
- Proceed
with washing out unexposed areas until they are completely
clear, alternating from side to side of the screen.
- Blot screen
and stencil with unprinted newsprint(never paper towels)
and ALWAYS DRY THE SCREEN HORIZONTALLY.
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B)
BLOCKING OUT PINHOLES
- Once the screen
is dry, check the stencil for pinholes, using a light source
such a light table.
- With a small paintbrush,
dot filler over any pinholes on the PRINT SIDE of the screen.
- Smooth the filler
with your finger to ensure that it will not leave a lump when
it dries. You do not want any lumps that will nick your squeegee.
NOTE:
Use filler appropriate to the ink system you will be printing
with. XR Filler must be used with water-based inks; regular filler
is fine for use with plastisols and solvent-based inks. If any
filler happens to get on the image of your stencil, quickly wipe
off with a damp cloth. (Do not use saliva as there will be a reaction
with the enzymes in it). Be sure to wash brush after use.
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C) TAPING
THE SCREEN
- Once all
pinholes have been filled and the filler is dry, proceed
to mask out the perimeter of the screen with Screen
Prep Tape. This is done on the SQUEEGEE SIDE (makes
clean-up easier as the soiled area will be small). Leave
about 2 inches clear around the image and registration
marks. Tape the sides of the screen as well to ease
clean-up of screen.
- Later, as
you are setting up for printing and have registered
your screen, you can tape over the registration marks
and around the image with Duratape, a bright blue, very
resistant tape. This will prevent any ink from seeping
under the screen and under the tape, and will ease clean-up
of your screen. Be sure tape is smooth, no bumps.
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