Modular Carriage for 20mm ALU Tubing Kossel

This carriage is modular in that the part where the arms attach can be swapped out. It gives me options to play around with delta arm connection methods.

It's built for this printer:
http://www.thingiverse.com/thing:154832

Using the Kossel mini effector:
http://www.thingiverse.com/thing:820768

It also includes a wedge belt connection and tensioning mechanism inspired by this (get the wedges themselves from this thing):
http://www.thingiverse.com/thing:793499