Q: Could I use a fluid epoxy resin, such as the type used for auto-body work, on cotton canvas?
A: There is no reason to use fluid epoxy resin, a toxic
irritant, instead of acrylic gesso on cotton canvas. It is even
possible that the epoxy might contain ingredients that would have a
corrosive effect on the cotton. Acrylic gesso has enough elasticity to
handle changes in temperature and humidity, it can be applied directly
to raw cotton canvas, and it is receptive to oil paint.