Beginner Question: Grasshopper - Geodesic Dome Creation

[jaddink]

I’m running into issues with offsetting curves in a “goedesic” dome. So many issues. Sorry.

for the inner structure

1. when attempting to offset the subdivided triangles, the “offset curve” gives me a runtime error.
2. When attempting to do a brep offset, some surface normals point inward, others outward. I’m having trouble figuring out how to unify them so they all point the same direction
3. booleaning out the center, to leave me with a structural element…error telling me the “second brep is empty”

outer structure

1. errors with offseting a curve
2. same boolean errors
   not sure if it’ll give me the same surface normal issue

Thanks for any help you can provide. I’m still learning grasshopper, and can’t seem to sort out the issue.
dome construction.3dm (550.2 KB)
dome_construct.gh (22.7 KB)

[Quan_Li]

Some of your tris give very short segments.

[ftzuk]

First thing I notice is the bottom of your dome has rectangular sections that are causing issues when tri-subdivided. Your inner curve offset works as soon as those pieces have been omitted.