I've been turning some stoppers recently, in a variety of woods. The
two I've turned out of English Walnut have both become stuck on the
bottle stopper chuck. I think the cause is the extra screwing in caused
by the turning process.

I'm looking at alternative ideas to remove the stopper from the chuck.
The first one I destroyed by turning to eliminate the friction point.
I've got ideas to eliminate this problem in the future, but no great
ones on how to remove the current sample.

Ideas?