Go over the places you don't want to seal with masking tape. These may be the sides or the bottom of your respective canvas, for example. Epoxy has numerous advantages over other adhesives and fillers. It might fill gaps and even now keep energy, it's waterproof, and it sticks effectively https://epoxy-resin-advantages20641.blogmazing.com/30698433/the-smart-trick-of-mixing-epoxy-resin-that-nobody-is-discussing