RepRap, 3D Printing, 3D Printer
This is http://www.thingiverse.com/thing:135368 This is the September 2013 revision of the Tweety Extruder, a fortified print with all the latest tweaks for performance. Specifically I added a bumper for the endstop and a lower reinforcer for the nozzle. The reinforcer is designed prevent head crashes due to the longer nozzle acting like a lever.