GeoDome Hubs

thingiverse

UPDATED: I got the angles on the "Hexhub" the wrong way round, so I've updated the STL & openSCAD files. I've also added base hubs (There are two types - Mirror images of each other) to make a dome on a flat surface. I've also added a marker on the hubs [Hex and Base] to indicate which holes require the shorter stuts to make construction easier. Original Text: I wanted to learn openSCAD, so I've had a quick play at making hubs for a GeoDome (Apologies if the openSCAD code is a bit messy - I'm still learning!) simplydifferently.org/Geodesic_Dome_Notes?page=3#2V/L2 My version is low profile with 1mm walls (you can adjust the wall size in the script) - I've also added screw holes to add a small screw to secure the strut to the hubs. To make a dome, you need 26 connectors (20 hexagons and 6 pentagons) and 65 struts (35 of length A(100%) and 30 of length B(113%)). Dome: Struts: A 35x100% B 30x113% Hubs: 5way (Penthub) 6x 6way (Hexhub) 20x (I'll make a 4way one day which would replace 10 of the 6way hubs at the base) To make a full sphere, you only need six more pentagons (32 connectors in total) and 60 each of strut length A(100%) and B(113%). Sphere: Struts: A 60x100% B 60x113% Hubs: 5way (Penthub) 12x 6way (Hexhub) 20x My openSCAD file use 9mm holes for the struts but this is easy to change in the scripts. Print Settings Rafts: Doesn't Matter Supports: Yes Resolution: Med Infill: 20% Notes: Printed using Simplify3D (Med settings)