The Bucky ball you tried to download is an imported feature anyway. You can't determine how to build it from the file. It also has curved line segments. I thought the real Bucky Ball was made of straight line segments. Of course, when you are on an attomic scale, how can you tell?
Check out the icosohedron_die.zip file. It uses surfacing to create a 20 sided dice. You may be able to use something similar to create the Bucky ball.
I created a series of dice as an exercise a while ago. I started out with a sphere and added points on the surface where the corners should be. Then connected the dots with ISDX splines, 2-point splines make straight lines, all lines in one feature. Behavioral Modeling came in very handy for making the segment lengths equal. I was making surfaces, but you can use these curve segments as centerlines.