Here is three part blog on making five layer two inch diameter ball. Actually, one ball with 4 dodecahedrons inside (ball made from maple).
Start with the thorough calculation and drawing. Marking twelve centers on the ball can be found on my first blog
2×2x3 bubinga wood
Cut to size
Shaped and polished
I end up using only firs and third tool bits
Miniature lathe setup
About to make a first cut
Made two layers
All four layers on the second hole. Arrow is pointed to the openings between the holes
Forth layer is made “blindly”, so, work done only by dials/lcd.
First and the next 5 holes where made same way.
-- Live to Learn