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I want to seal the edges of cut Gatorfoam board with something to make it smooth. Has anyone done this? It has already been sanded, so is as smooth as mechanical means can make it. It is THICK board so those edges matter.
I will be applying Japanese block printed rice paper over it. If anything sticks out through it, the paper will not apply smoothly and may tear / abrade with use.
Archival is preferred. The board is archival too. Anything else will probably deteriorate the paper quickly.
I used a coat of gesso yesterday. The foam is still pretty rough, though. Not sure how many coats would make it smooth: the edges I coated yesterday took me 4 hours. (!)
I could use acrylic medium.
Not sure which will fill up the “pores” faster.
The roughness is a results of the saw used. This is the problem with modern materials of hard veneer, soft core.
A scroll saw moves up & down which pulls at the soft core. A Table saw, which cuts with a revolving slicing action would work better for later ones if you are doing again but the right blade needs to be used.
Are the exposed edges you are sanding on the face or side?
Have you been able to test the modeling paste yet?