to continue with the base, I wanted to make a try with platonic solids.

there is two models. the first is Cube/Tetraedron/octaedron.

I started with the cube, then used its long diagonals to build the Tetraedron.

for the octaedron, I used mesh dual function! very convenient.

for dodecaedron and icosaedron, I started to model the icosaedron from the 3 golden rectangles which are perpendicular to eachother. it makes no calculation expect golden ratio (phi), and no brain but a little tedious to make the lines.

Then again the use of "dual mesh" function to get the dodecaedron

the text files can be pasted into a graph for the 3dmodel

1. Cube / Ocaedron / Tetraedron

2. icosaedre and dodecaedre