Ekobots - Gear generator simple or double helical tooth

All parametric gear generator in OpenSCAD: 

* Simple tooth (angle_twist=0) 

* Double helical/herringbone tooth (angle_twist=n) 

All parametric grub generator. number, angle and size of screws. 

* Sample for gear and grub. 

* Sample for gear and groove. 

* Samples gears from 10 teeth to 50 with 5mm hole. 

Derivation of: Parametric Gear by D1plo1d Copyright 2010 

                                 Parametric Pulley by droftarts January 2012

The OpenSCAD files are inside the Helical.zip.stl, the site do not accept .SCAD files.

Thanks!