About this 3D model
This is an extension that installs in Inkscape. It adds lines to an Inkscape document that will result in a living hinge when those lines are cut, usually with a laser cutter. An example of using the living hinge is in the file pencil_box_2side_w_divider.svg 5/26/2015 Version 0.2 has been uploaded. Changed inkex.unittouu to self.unittouu and inkex.uutounit to self.uutounit to make it work with Inkscape 0.91 Thanks to Pete Prodoehl for pointing this out.