I have build a Prusa Mendel i3. When i extrude filament the extruder starts jerking around always at the same point of the big gears turn. Please see the attached youtube video to get good idea what i mean. [
www.youtube.com] There is a small marking on the big gear to help you follow its spin. It starts jerking with that dot hits the driver gear.
What could be the reason behind this? I have tried different extrusion speeds and temperatures but they dont seem to affect the problem. Im really at lost.
Edited 1 time(s). Last edit at 06/30/2014 11:18AM by eripaha.