My Idea is to combine 2 web cams and a beamer or something similar , that could emit some sort of pattern, so that the cameras could recognize the 3D shape of the scanned object, by how the shapes have changed on the object. Those patterns could be stripes, points, etc. .The result should be a CAD or 3D-Modelling-compatible Software, so that the Object could be routed or printed afterwards like a 3D copy machine