Thank you all for the input. It is so nice to be able to ask questions on a CAD forum and get so much help.

Of course the last trick is some manual and not so automatic! :)

And at the start draw the second circle vertically above the first one
for have a good start of propagation...

Either script works fine for placing a point. (no syntax error)
- Brian

Hi

new files

Chri

Yep that is the more easy for the moment! :)

If there are different sizes of spheres just take different color for each size!
(so for each familly of points...maybe successive imports... )

How is done the import from SketchUp ?
SVG, OBJ, DXF ... ?

I just wanted to say thanks again. I did end up doing it in SolidWorks. Attached is a very low res animation.