I think Ultimaker is currently using Sunon MC25060V1.
When looking at that last picture the dent seems to be higher up than usual and I find the green deposits on the inside kind of strange. What kind of (PLA) filament is that?
Also, could you post a picture of the top of your heater block?
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foehnsturm 970
Just an observation from a noob, regarding this issue: Just printed some 10 hrs with a slight rattling noise until I discovered the front left long screw beeing loose. Everthing is still working perfect. So, not much tightening required I think. Distance here is 17.1
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Nicolinux 288
@gr5: Ok, nice - I didn't know about the new 3dsolex couplers.
@Labern: I think that might be it. A long time ago I swapped the default 3rd fan (which is super loud) with this one: MC25100V2-000U-A99 (air flow: 3.0 CFM which is around 5m^3/h). I don't know how much air volume the default 3rd fan can move but I just made a test and held my hand against it. And damn the default noisy fan seems to be "stronger". So this means all this time I might have shortened the lifespan of those PTFE couplers because of the stupid fan :(
I was not able to find a better/stronger fan at this size. Where does UM get them from?
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