The Half Stepper. Spring loaded extruder fix

The reality is that my second extruder is never used and only causes me problems when servicing and more mass to move. I love NeverDun design (http://www.thingiverse.com/thing:551916), it eliminates the second extruder using their space to add a cooling fan.

It did not fit with my spring loaded extruder (http://www.thingiverse.com/thing:231310). I made a few modifications to suit my needs. Now it is simpler and easier to print.

Print without supports on the .STL position. Use your fin