My fiance and I are arguing about how to apply resin to a paper model. We've both seen people use paint brushes and people using sponge brushes. My fiance's argument is that the chemical reaction of the resin would destroy the sponge brush and break it down while using it. My argument is that paint brushes are expensive and resin is not easy to clean off of... anything. Does anyone have advice that they can give on what's the best way to apply resin to papercraft?