Claude Dupuis replies: On small projects like bottle stoppers, one could use CA glue. Use plenty of ventilation. Apply with a cue tip a low speed and spread to an even surface. But I prefer a less potent finish called a french polish. Different companies make one with their own mix but it’s a shellac base friction polish. I have had good luck with Shellawax Cream and Shellawax friction polish. Both are available at Pen State and Craft Supplies USA. Woodcraft may also carry it.