Hi there,
I got an Ultimaker 2 recently.
I have been using the machine for the last one week. I made some successful prints using PLA blue. What is unfortunate is that the material feeder has lost its tension. I tried adjusting the screw in the extruder mechanism but to no avail. As it stands, even though the gap between the stepper knurl and the white head is small inserting material is no longer tough. The day i got the printer it was very difficult to push the mateiral in. Now, its very easy. The material reaches upto the extruder but not past the extruder head. I tried removing the bowden and pushed filament by hand which worked. This squarely leaves to failure of extruder mecahnism.
Now, If i try to print, the small nut on the stepper connecting the knurl becomes loose and the stepper just stops. For now, the machine is down and i have some important prints to do.
Overall the machine looks good from the outside but i am deeply concerned about the build quality. I waited for UM2 more than a month. I am not sure whether its worth the wait.
1) Have any of you faced a similar problem
2) Is there an assembly instruction for UM2 feeder. I am still not sure how the adjustment screw inside the assembly works. It just keeps on rotating as i try to tighten it.
Your help is much appreciated.
Uma