Prusa i3 acrylic extruder problem

[Admin]

There are 3 caps under each A4988.
Check if the extruder motor is broken:
Connect the wire to either interface on the mainboard for X,Y or Z motors.

[Multipicture]

Yes all of the caps in place .. I have tried it before and the motor worked .. I can try IT again later today to be shure

[Admin]

(⊙_⊙)
Could you please take a video and upload it ?

[Multipicture]

Here is a link to a video

http://youtu.be/Ewg7F06GB3g

You see when I help feeding the motor is turning

[zhangxueyou]

Check your private message or email.

[hamboner]

I am having a similar problem, what was the outcome of this?

[zhangxueyou]

I am having a similar problem, what was the outcome of this?

Are all the jumper caps plugged under extruder's motor driver?

[hamboner]

Yes, they are all installed. It works sometimes, but other times it just binds and stutters like shown in the video.

[zhangxueyou]

Yes, they are all installed. It works sometimes, but other times it just binds and stutters like shown in the video.

How is the temperature of extruder?

[hamboner]

It seemed that i had a handful of issues that are now mostly solved. I got a caliper that measures to .01mm and turned out my filament was closer to 1.81mm (vs the 1.68mm default in slic3r). I think the default manual feed speed in repetier was too high for the nozzle size (0.3mm) so it was skipping. I was also having some issues with my filament coming off the spool and therefore not feeding properly. I mounted the spool next to the lcd on the top rail and that has seemed to help as well.

I will say that after a few hours the extruder support piece is sagging like others have complained about. I had to run a zip tie from the extruder feed screw to the carriage bracket in order to stabilize the extruder enough to print a replacement.

Is there a solution to the sagging extruder support? Updated design? Print out of ABS instead of PLA?