I have put three coats of epoxy on the fretboard but the epoxy is thick and doesn't cover evenly when it dries. I haven't tried thinning it to see if it will cover more evenly. It is supposed to be self-leveling but it has a tendency to fish eye which I don't like at all. I applied the last two coats with a small brush to try and fill any dimples. It's thick enough that I have plenty to work with while sanding. However I'm not sure how much work it will be to level it out and then buff it to a shine? On the plus side the epoxy dries in 12 hours, is crystal clear, really easy to apply, and it has no odor at all.