Vases and urns are a challenge because invariably they involve ‘end-grain’ turning; that is, burrowing into the top of the block rather than the side. Additionally, because they are held on the lathe by being fitted to jaws on a chuck, they are susceptible to disengaging from the chuck and disappearing somewhere in the workshop.
The longer the piece, the greater the risk of disengagement.
Patience is paramount with these pieces!
Liquidamber Urn