- I used plywood. Dia 20cm and 1 cm tickness; With a router if you have make half holes of same diameter of wood bowls
- Wood bowls are found in a hobby shop. They are used for necklace making. They're predrilled, just find nails which have the same size of hole.
- Drill holes for nails so plywood will not split; Add glue and nail in place
- Fill gaps with woodfiller
- That's it...