Quoted from baldtwit:

solarez gloss uv cured resin - amazon.com link » - works pretty well and process is similar to the lacquer:
- level playfield
- drop in enough solarez to fill insert
- put a clear plastic cover over area to flatten the doming from surface tension - I used a piece of a thick paper sheet protector
- shine black light on it to cure the resin
- peel off the plastic and done. No waiting or shrinkage like solvent-based solutions.