Four of those pegs to be made to hold dodecahedrons inside the sphere
One is crewed in to the insert for proper centering the ball
If all is well the center will be in the CENTER place
Like so, all holes can be made.
And now getting to the last hole. Dodecahedrons inside have to be locked.
The fit has to be as tide as possible. Paraffin or candle wax used to secure internal structure
There pins/pegs on the front and one will hold the back
Next is the series of the last hole pictures:
Finally, all holes are made. Cleaning and polishing left to do.
-- Live to Learn