3D Laser Scanner
Create your own hi-tech 3D laser scanner with stuff you have around the house
Using just a laser pointer, a wine glass, a rotating platform, and a digital video camera, you can make accurate 3D models of an object or person.
Note: This Instructable was among the first posted to the site, in 2005. As such, it is dated, although the technique it describes is still relevant. To see a more current treatment of the subject, check out the episode of the Know How Show that is embedded in this project’s webpage.