Airtripper's Bowden Extruder V3 pushfit adapter
by Rondavouz, published
Added a M5 pushfit adapter to the design. Allso changed the mounting brackets to hold a m4 in place.
http://reprapworld.com/?products_details&products_id=169&cPath=1616 are the push connectors used
If you are using a tube for the idler use(original airtripper):
If you are using springs use(modified idler):
The blue part is the modified idler from(http://www.thingiverse.com/thing:41870)