These are hubs for a 2v Geodesic Dome. I used drinking straws (dia 5.5mm) to form the struts.
Angles are accurate to 0.1deg
For a hemispherical dome you will need
- 6 of 5-point hubs
- 10 of 6-point hubs
- 5 LHS 4-Point hubs
- 5 RHS 4-point hubs
- 35 long struts (e.g. full length straws)
- 30 short struts (88.4% of long struts)
to scale to other diameter straws / sticks / pipes, divide by 5.5mm and multiply by your diameter.
At smaller scales you don't need supports.
The 5 point hubs are connected to 5 short struts
The 6 point hubs are connected to 4 long struts and 2 short ones. There is a little 'A' marked on the short struts which mightn't print too well on small scales.