Filament Quickchange for Robo 3D, Wade extruders

3-24-18 Update
I realized I had the wrong retainer file for the redux pinchers. The one labelled Retainerredux should fit much better. Apologies!

3-16-18 Update
Finally had a chance to revisit this model. I redesigned the swivel to be more robust. These are labelled redux.

**10-6-16 Update
I have been thinking about and modeling a lot with captured and print-in mechanics (see http://www.thingiverse.com/thing:1809355 for an example) and turned my sights to this old gem. I have been devel