You need 9 pins with a diameter of 5 mm and in the following lengths: 1X - 33 mm for the center, 4X - 23 mm for the edges, and 4X - 16 mm for the circle

That's all......No support...just a gap at the top 0.6 mm so it can spin freely ..... and drops of glue

I used bamboo stick 5 mm as a pins