GT2 Belt Ziptie Tensioner / Coupler

This is a tensioner or coupler that utilizes zipties to clamp and tension GT2 type belts.

Default Settings:
length = 20;
thickness = 6;
width = 8;
belt_thickness = 0.9; // Excluding teeth height
belt_pitch = 2;
teeth_height = 1.2;
teeth_width = 0.8;
tab_length = 6;
tab_thickness = 3;
zip_hole_diameter = 3;