Guys been putting down 3 rms of that pre-primer mdf baseboard and crown molding.When your using a finish nail gun sometimes a person gets carry away.I was wondering what you use to fill those holes,I have used in the past Painter Putty but thats kinda messy.I also have some cracks that where one piece of 1x6 butts up against another trimming out a door.Wanting to kinda build up the filler little so that can come back and sand it level when all is cured/dry.What works for you,oh the paint will be latex which will be spraying using an airless.Thank "The Home Remodeler" for now