Loud Z Motors

[ByteChild]

Printer Model

2.4R2

Extruder Type

Galileo

Cooling Type

Stealthburner

Hello everyone,

I've been unhappy with the noise level of my Z motors on my Voron 2.4R2 for quite some time. But I'm stuck and hope you can help me out

I'm using Stepper Online 17HS19-2004S1 motors. The A and B motors are very quiet.

It's mainly the normal Z movements that are extremely loud. This especially bothers my wife, as the printer is in the attic directly above our bedroom.

What have I tried so far?

• StealthChop – Slightly reduced the noise, but not by much.
• TMC Auto-Tune – Had almost no effect.
• Changing run_current – I tried lowering it from 0.8 to 0.6, and increasing it to 1.0, 1.2, and 1.4. Lower current made no difference; higher current made it even louder.
• Speeds – When I reduce max_z_velocity to 8, it's bearable. That’s fine for homing, but too slow for regular movement. Increasing max_z_velocity just makes it louder. I tested in 5-unit steps up to max_z_velocity: 50.
• Mainboard replacement – I switched from 2x SKR 1.4 to an LDO Leviathan 1.2. No change. Both used TMC2209 drivers for the Z axis. I don’t think the drivers are the issue, since A & B also used TMC2209s and were barely audible.
• Rebuilt the Z-drive modules – With R2, I rebuilt the Z-drives, checked all screws, and re-secured them with Loctite.
• Placed a sidewalk board and foam underneath the printer – No change.
• Switched to Panzerballs – No change.

What else could I try? Could the motors themselves be the problem? Would switching to G2Z-XL help?


Here’s a video of the issue:

I hope someone can help me figure this out.


Thanks in advance,
ByteChild

 

[shiftingtech]

different (higher) microstepping and/or turning on interpolate might help
tmc2240s are noticably quieter in other applications. haven't tried them in this one, but...maybe...

I'm curious if you actually tested MOVING faster on Z. I mean, it's all well and good to talk about increasing the max velocity, but if you don't make sure the actual speed is increasing, per the slicer, or per the various meshing/probing procedures, it's not going going to change the speed things are actually moving.

 

[ByteChild]

Hi,

thanks for your reply

different (higher) microstepping and/or turning on interpolate might help

I’ve tested every combination between 16, 32, and 64 microsteps, both with and without interpolation. Unfortunately, it didn’t make any noticeable difference in the noise coming from the steppers.

tmc2240s are noticably quieter in other applications.

Unfortunately, I’m locked into the TMC2209s since they’re soldered onto the LDO Leviathan board.
My SKRs died, which was the main reason I had to switch the board in the first place.

I'm curious if you actually tested MOVING faster on Z. I mean, it's all well and good to talk about increasing the max velocity, but if you don't make sure the actual speed is increasing, per the slicer, or per the various meshing/probing procedures, it's not going going to change the speed things are actually moving.

Yes, I did some testing via Mainsail move commands. When I adjust z_max_velocity, I can clearly see and hear the difference in actual movement speed.

 

[Dario]

Have seen the same thing on a new build using tm2209 and LDO motors for Z. For me, changing current from 0.8 to 1.4 amps helped a lot. Motors are rated for 2.0 max. The 2209s end up running hotter.

 

[NoGuru]

Yeah I think you just have one of those combos that make noise. Only way to fix it changing drivers or motors.