About this 3D model
This is simple footwear for makerbeam well euh beams It is in openscad so u can change the parameters. There are simple version en versions that are a bit overdesign but both work fine. O there also a experimental corner piece it is a bit hard to print because of the overhangs for more info on makerbeam see http://www.makerbeam.eu/ and no i am not working for them ;-)