amxtruder
An extruder designed for a Prusa i3 and a lightweight motor reecived from one of the #reprap team
the extruder design is based on
http://www.thingiverse.com/thing:24219
specifically:
http://www.thingiverse.com/download:80629
This design uses bearings on either side of the motor shaft to prevent excess lateral load on the motor shaft
The fan shroud for this design can be found in the file
mgs_prusa_i3_amxtruder.scad
it requires the https://github.com/joaz/machine_parts repo to be builtt