Along my wanderings of the day I played today with my first (very simple) lobel frame
Here is the plin/rayh/rivf/36p58p2.C6 diagram I used.
This model counts 60 rods and 31 spheres
The Lobel frame is complete on each following photo
The reinforcement pentagonal pyramid (green on several photos) can be positioned inward or outward depending on which direction you want to go.
This Lobel frame is malleable. You can deform it without disconnecting any rod to give it the desired shape. You can then constrain it and freeze the shape by placing additional rods (white ones on some photos).
Using Lobel frames, not as such, but as part of something bigger surely opens up a whole world of new possibilities. After all, aren't 3D models in video games made of a mesh of triangles?
Why not go further. Who will show us how to integrate lobel frames in more ambitious constructions?
Lobel frames are explained by Karl in the wiki and illustrated in his gallery.
Rafael dealt with it too.
Alain LOBEL's web site http://www.equilatere.net doesn't work anymore but you can access the files directly.
Examples I found: from Peter, Galan, Graham aka AFKAN, Amafirlian (not directly tagged as Lobel frame but sort of) and Geomag Shop Fox Town.
EDIT: I also made experiments with opposing Lobel frames.
EDIT 2 : [Howto].