Cumulative layer shifting on a Voron 2.4 r2

[Mykola]

Hi everyone!
I’m having an issue with my Voron 2.4 R2 (350x350x350) – I’m seeing cumulative layer shifts during long prints (the longer the print, the more the shift is visible on the X and Y axes).

Hardware setup:

• Mainboard: BIGTREETECH Manta M8P V2.0 with CM4
• Toolhead board: EBB SB2209 (CAN)
• Drivers: TMC2209 in UART
• Input shaper configured using ADXL345
• Z-probe: Voron TAP

What I’ve tried so far:

• Belt tension verified and even
• Motors and pulleys are secure
• I swapped X/Y motors and drivers – no improvement
• No overheating detected

Could the problem be caused by the mainboard, CAN communication, or possibly power issues?
Any help or suggestions would be highly appreciated!

 

[NoGuru]

That is not layer shifting, that is skew. Look into Klipper skew compisation or try and square your frame.

Skew correction - Klipper documentation

www.klipper3d.org

 

[Mykola]

That is not layer shifting, that is skew. Look into Klipper skew compisation or try and square your frame.

Skew correction - Klipper documentation

www.klipper3d.org

The diagonals of all sides of the cube are as equal as possible +/- 0.2 mm

 

[NoGuru]

Humm, if your sure its not skew and is in fact layer shifts.
Is the config for the motors correct?
What speed and accecls are you running?
Current of drivers?

 

[Mykola]

---

The current is set to 0.9 A, speed is 150 mm/s, and acceleration is 5000 mm/s².
I’m using TMC2209 drivers.

 

[NoGuru]

Anyway to get a fan on the drivers?
What about the tension in the Z belts? Could there be some wobble in the frame or gantry?