Well......surprise, surprise, surprise.......
If I had known this was inside this Australian red mallee burl bowl blank, it could have been easily removed, by flipping the blank over......but, from the outside, there was no indication this was inside. The black stuff is brittle, and like glass......breaks like glass, too.
I may end up losing this bowl because, as measured, there is less than 1/8" before it will break out to the bottom of the bowl.....proceed very very carefully!
-----odie-----