great clean one 3d models

http://www.thingiverse.com/apps/customizer/run?thing_id=47956 Instructions Using the following options: 1st_plate enabled / disabled switch toggles on/off switch enabled toggle toggle toggle plate 2nd_plate_bottom_hole removed hole size hole hole...

One of the most striking features of the Pappus graph is its symmetry. The curves and lines that comprise this diagram are perfectly mirrored on either side of a central axis, creating an almost surreal sense of balance and harmony. This symmetry is...