About this 3D model

updated on mar.29: --- V3: added a little tolerance, download this one. --- v2(shiny bojo) with nut older version: http://www.thingiverse.com/thing:191391 Edit it online https://tinkercad.com/things/5dWygdFdB5E Tell me how it comes out plz if you have tested it. And the setting you use.