Greg's Wade extruder for Graber i3

Just a little remix of the original extruder.
The extruder was generated by the original file and added extra supports for easy printing, for everyone to have a good result.
The extruder generated is 5.1 version of original, for 1.75mm filament.
The small and large gears have been modified to use the shorter screw tractor. Was added in small gear a chamfer, avoiding the use of screws for fixation. In large gear was shortened fitting screw tractor. In both gears was made a smooth teeth.
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