A Hybrid Hollow Form made from Oak Burl and epoxy resin.
Approximately, its diameter is 16cm and it is 10.5cm high. The opening is 3cm and the base is 8cm in diameter.
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.