I had similar problems, but they were caused by a bowden tube with too small inner diameter.
Because the diameter of filament varies over its length, the filament would get stuck during printing.
You can try to disconnect the tube and see if you can push filament through it by hand.
It should not require much force. If you can measure the inner diameter, it should be at least 3.1 mm.
My problem was solved by contacting ultimaker support. They sent me a new tube.
Recommended Posts
kaz911 0
it sounds like a blockage in your bowden tube where it hits the first part of copper - or you are extruding to "cold" for your material. I think most of us extrude at 220-235 degrees for PLA.
1. First try to heat the head to about 260 degrees for 5 minutes and see if that loosens enough for your to manually extrude a bit. If that is the case - then it is a blockage. A high temperature will make the material softer and allow you to pull the material back (should not be done with a lot of force)
2. Let it cool - and then take the bottom head assembly off (from bottom plates) - and find a way to keep it stable. You should now be able to see the blockage on the top of the PTFE. Dont remove the material yet
3. Heat head to 180-200 degrees for a couple of minutes - and then use pliers to remove blockage.
4. Check the bowden tube sticks out 8 mm below the bottom plate. If it is less - then the material can work its way in between the bowden tube and the copper "tube" and create a blockage.
5. Adjust and reassemble
/kaz
Link to post
Share on other sites