DEMO
3
COAT THE SCREEN
Next use a trough to coat the
screen with the photosensitive
coating, dragging it across with a
squeegee. Edges can be cleaned
up with an old credit card or a rag.
Once finished, leave the screen on
the drying rack to dry off – the coating
must be completely dry before we
put the screen over the lightbox.4
EXPOSE THE SCREEN
Place the coated screen on top
of the first stencil and expose it to
the UV light for about a minute.
The amount of time the screen is
exposed to light will vary depending
on the strength and type of lightbox
you use. As a general rule, shorter
exposure times are more helpful for
fine lines, and longer times are good
for bolder stencils.5
WASH IT DOWN
Wash the screen with a hose to
reveal the design, which has now
been “burnt” into the impermeable
coating on the screen. The screen
must be left to dry for a second time
before starting printing.
The screen is fixed into place on
a hinged print bed. Special screen-
printing beds feature a vacuum that
sucks air through small holes on the
surface in order to avoid the paper
shifting as you print. It is possible to
create a homemade version of a print
bed by attaching a screen to a base
board with hinges.