A Hybrid Hollow Form made from Burr Elm and epoxy resin.
Approximately, its diameter is 16.25cm and it is 10.5cm high. The opening diameter is 3.5cm.
You can see it being made here on my YouTube channel:
The pieces I make are decorative/ornamental.
Wood is a natural product - I cannot guarantee that there won't be further movement over time or depending on the environment it is in, to me this can enhance the piece, but I understand not everybody will like this.