Thin 30 minute epoxy with either denatured alchohol or 95% or greater Isoproply (rubbing - 90% if thats all you can get). Thin about 2/3 epoxy to 1/3 alchohol (about consistency of paint). Brush on (I use a bristle brush -- about $0.75 each so you can throw away) liberally, will take about 3 hours to dry so not sticky.