Okay I need PRO help. I'm building some custom drawers for my wife's sewing patterns, I say custom because they're sized for the pattern envelopes. Anyway, the drawer fronts are 3/4" MDF with a 1/2" roman ogee edge and are going to be painted. I know I can't just paint the MDF cause the edges will just soak up all the paint then swell like a sponge. What can I use to seal the edges before painting? I read somewhere that you can seal the edges with drywall mud, but I question that since the mud is water based. Any advice would be helpful.