Geodesic, 36mm and 85mm diameter.
Now a full hemisfere, just print 2 times.

Resize it to make bigger.
Add a lamp or leds inside.
Print or paint the pieces in different colors.
Easy to print, 1 plate the small and 2 plates the big.

You can help me to do more things like this.
Buy my designs at pinshape:http://pinshape.com/users/27920-jsirgado
The OpenSCAD file is there, you can change all.

Created with OpenSCAD - Open source programmable CAD.

You can change all parameters and create your own geodesic object.

Mounting (parts):
1 pentagon at top.
5 hexagons in ring around the pentagon on top.
5 pentagons between the hexagons of ring.
5 hexagons between the pentagons above.
Glue all.

Mounting (hemispheres):
Make 2 of them and glue the 2 hemispheres together.