X3D for Nano Technology Projects
From CS486wiki
3D Plans
Model Creation
Models may be created using any of the popular 3D editing tools; if possible the target file type should be .3ds.
Conversion to X3D
Models will be converted from .3ds to .x3d using AC3D.
Display of X3D Models
Currently models are being displayed in Google Sketchup in their native Sketchup format. The plan of record is to show models in X3D using one of the browser plugins (Flux, SwirlX3D, Octaga)