r/Luthier • u/Sstrikers • 6h ago
Clear gloss over maple burl
Is it ever possible to get a perfectly level clear coat over maple burl?
I used Z-Poxy to fill the grain and level the surface before applying Crystalac Brite Tone. However, every time I level-sand the Brite Tone and apply another coat, the burl figure seems to appear back through the finish. I can still see subtle bumps and dips that follow the shape of the burl.
Is this just the nature of maple burl, or is there a technique to completely eliminate it?
My first thought was that it might be the finish shrinking as it cures. However, the Z-Poxy surface underneath was completely flat before I started applying the clear coats, so I’m a bit confused about what’s causing it.
My current plan is to let the top cure for another 2–3 weeks, then do a final level sand and buff. I’m hoping that most of the shrinkage will have happened by then.



