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Knocking sound from extruder stepper


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Posted (edited) · Knocking sound from extruder stepper

There is this knocking noise from extruder stepper. Please help me to figure out the problem.

SKR 1.4 Turbo + TMC2209 ( vref=0,8V ) + Marlin

Here is the list of what I did to solve this,

I removed filament so it is not about the hotend
I changed TMC driver
I changed connection port on mainboard ( used E1 port instead of E0 port )
I unplugged steppers cable and plugged to x / y and z steppers , this time sound transferred to that stepper.

As I understooed, extruder stepper is making tiny and sudden retractions during the xy direction changes of nozzle while printing. That knocking sound comes from that little retraction moments. It is not effecting print quality but very disturbing and loud.


I have made 2 videos. In the first video retraction moments can clearly be seen.






Edited by utkudemi
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    • 7 months later...
    Posted · Knocking sound from extruder stepper

    Hello. Did you solve the stepper noise issue? I have a similar problem with Ultimaker 2 Ext+ but with the Z axis stepper. It started after a firmware change. I can feel a strong vibration touching the lead screw. Same with not effecting print quality but the noise drives me crazy. I have to leave the room when it's printing. I checked the wiring and changed the stepper. Didn't fix the problem.

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    Posted · Knocking sound from extruder stepper

    When printing the Z stepper is pretty silent?  It just makes a quick "blip" between layers.  Can you make a 5 second video showing the problem?

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