alumilite clear slow

I’m trying to cast paper and I’m getting lots of air bubbles around the edges of the paper. I suspect the pressure pot is pushing out trapped air in the paper. My thought is to seal the paper prior to casting. My question is: spray with a clear acrylic or a polyurethane? I’m using Alumilite...

Got a problem and am looking for some assistance - I am printing 3D components to embed in Alumilite Clear Slow to make unique pen blanks. I am using both PLA and PETG filaments for the prints. I have printed stars, some wavy patterns and some color bars, all embedded in the vertical pour molds...