Proton Pack Gearbox/Ribbed tube interface parametric

UPDATE 2/12/17. This part was used in the Ghostbusters Station 6 fan film. Check it out on youtube at https://www.youtube.com/watch?v=RHMUsQqLmRg

A full size, 3D printable interface part to allow the joining of the
proton pack gearbox at:
http://www.thingiverse.com/thing:509510
to the ribbed tube from the Synch Generator:
http://www.thingiverse.com/thing:526328

The STL file is intended for use with a tube of outside diameter
27mm, and a M6x50mm bolt.

You will need the MCAD OpenSCAD library at:
https://github.com/SolidCode/MCAD

Epoxy the bolt into the interface, slotting the head into the hex. hole.

Edit the scad file for different tube/bolt sizes.