This scanner can scan small objects with fantastic accuracy. Its the "Mark 2" of my last Hackaday project, its slower because it requires several images, but it way more accurate.
The key components are now:
a). 2 cameras and 2 pies to make a stereo camera.
b). A projector to add structured light patterns to help the triangulation from the stereo camera.
c). A 2 axis turntable.
d). Custom written software to blend all the different views from the turntable together.
e). A huge amount of accuracy optimisation. Also careful use of memory so the high resolution uses the minimum RAM, and speed optimisations such as synchronising the cameras.
Its well calibrated too so the CAD files it produces are at precisely real world size.
Finally I'm proud of it now, so I've decided to launch it on Kickstarter to see if anyone would like one.