Nanotubes and Nanocups

In "Buckyballs" I described a simple openSCAD method for making molecular models and began a search for interesting molecules to print. I've come across a very nice site for generating the atomic coordinates of carbon nanotubes, TubeASP, by R. G. A. Veiga, Universidade Federal de Uberlandia, Brazil, and David Tomanek, MSU, 2007. see http://k.1asphost.com/tubeasp/tubeasp.asp

Nanotubes are a form of carbon related to Buckyballs. They have interesting properties and are of great interest to