We have been working with Vincent Scalfani from the University of Alabama towards supporting a community of 3D printing crystal structure enthusiasts. There is a listserv, [3DP-XTAL] hosted by the university of Alabama and if you would like to be added to the listserv, simply email Vincent at vfscalfaniATuaDOTedu. They are also in the process of creating a 3D printing crystal structure wiki/blog for the community.
With Vincent as the driver we are creating a public on-line repository for 3D printable structure files (.stl and .wrl). He used Jmol to prepare ~30,000 molecules and solids in .wrl and .stl format and we will be hosting them on part of our data repository. We are very excited about this project and there will be more information at the upcoming 248th American Chemical Society Meeting in San Francisco, CA. See CINF Abstract # 125.
The flier that will be distributed at the IUCr meeting in Montreal in August is available on Slideshare here: