hello ultimaker community
I have an ultimaker original for now almost three years. I have made several upgrades to it and until very recently it has been one incredibly fine and precise machine and I have had a so much fun and productive time with it.
now suddenly extrusion doesn't work at all. I have had similar issues before, mostly gone since I installed the upgraded nozzle construction. it is incredibly hard to extrude filament, even by hand. first I thought it might be the bowden tube. this happened to me before; brittle filament blocking smooth movement within the bowden tube. so I removed the bowden tube and tried to feed filament directly into the nozzle. it was still almost impossible. so I decided to remove the nozzle and take it apart, just like I sometimes had to do with the original nozzle. but even without the ptfe couple movement was still really hard. I then took the nozzle apart completely and cleaned it. I could see through and couldn't find anything obstructing the filament movement.
I have now reassembled the nozzle, everything fits tight and is assembled as it should be. so I just tried to feed new filament into the nozzle but still didn't have any luck... I would say I'm quite an experienced ultimaker user and I have to say I kind of am at the end of my possibilities. does anyone know what could be the problem? could there be a problem with temperature? cura displays the correct temperature, but maybe the sensor is broken?
did I miss anything, what else could hinder the filament from extruding? again, the problem is definitely somewhere around the nozzle...
thank you so much for any advice!
best regards
yves