Leaderboard

I like undercoating with epoxy on balsa because it's thick and tough enough not to leak air. If there's any little fault in the undercoat and you dry your paint with a hair dryer, the heat will expand the air in the bait and bubble your paint.. Epoxy also levels out better over minor surface roughness than just about any other undercoating to form a hard smooth surface for painting. To me, epoxy undercoating and Dick Nite topcoating are optimum. You can mix and match undercoats/topcoats as you like but these are the ones I really prefer.