Lightly spray the plexi with a cooking spray such as Pam or any generic
brand. Use oil paint as the medium to for any of the addivitive,
subtractive or direct methods of printmaking. You need very little oil
paint since it is spread out so thin. Since some pigments dry quicker
than others, you can always add a bit of linseed oil to keep the paint
from drying out. We found we could work on a plate for up to a week and
still get a good print and ghost print.
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