#Squeaking noise on circular/arc movements

1 messages · Page 1 of 1 (latest)

sand nexus
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Hi, I have a Flyingbear Reborn 2 [1], and it makes a squeaking noise [2] coming from the right side whenever the print head is moving not in a straight line but does a circle/arc movement. Becomes more noticeable with more speed.
This is a new unit about 2 weeks old, so it probably isn't yet a lubrication issue.
I didn't disassemble the frame in any way, but I can at least say that the source is probably not motors.
It doesn't impact the print quality, however I don't have a separate space for the machine and the noise is quite distracting, especially when I print for 12-14 hours a day.

I tried cleaning and lubricating the rails with a silicone lubricant, didn't help.
I did take off both motors, trying to move them by hand even quickly doesn't produce the sound.
Moving the print head by hand doesn't produce the sound.
I checked belts tension and it feels fine, though I have no idea how tight they should actually be.

I did not however check the bearings the belts ride on, as they aren't easily accessible and I'm reluctant of disassembling the top part because I have very little mechanical experience.

Any and all tips will be greatly appreciated.

[1] https://3dflyingbear.com/collections/3d-printer/products/flying-bear-reborn-2-3d-printer
tldr: coreXY, direct extruder, marlin 2.1, dual Z motors
[2] https://mega.nz/file/Xc8RjKoS#BuhWRyxBmTZ4kqZGgJo4nhDqfKvZbBiU5s4-_4dm_gI

royal windBOT
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AI Help

Based on the information provided, it seems like the squeaking noise is most likely related to the movement of the print head during circle/arc movements. Here are a few troubleshooting tips you can try to address the issue:

  1. Check the belt tension: Ensure that the belts responsible for the movement of the print head are properly tensioned. If they are too loose, they may cause the print head to wobble or produce a squeaking noise during certain movements.

  2. Inspect the linear rails: Examine the linear rails and guides on the right side of your printer. Make sure they are clean and free from debris or any obstructions that may interfere with smooth movements. Applying a light lubricant, such as sewing machine oil or silicone lubricant, on the rails can also help reduce friction.

  3. Examine the pulleys and bearings: Inspect the pulleys and bearings on the right side of the printer. Ensure that they are clean and well-lubricated. If you notice any damaged or worn-out pulleys or ...

WARNING: This response is AI generated and may contain errors.
hybrid blade
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Can you post a video of the sound?

sand nexus
hybrid blade
sand nexus
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I’ll add a video of rectangular motion for comparison, there really is a big difference

hybrid blade
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Two of my printers made a sound almost exactly like this when doing circles

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It’s just because of the way the board drives the motors

sand nexus
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Can I do something about it?

hybrid blade
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You could upgrade to different motor drivers

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TMC drivers work differently and produce a very different sound

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It’s sort of muted and doesn’t make the high pitched whine of A4988 drivers

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Compare that to this, where there is a very similar sound to what you’re describing

sand nexus
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I see

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Is replacing them hard?

hybrid blade
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Depends on your mainboard. Sometimes you have to get a new mainboard, other times you can just swap out the drivers. What mainboard are you using?

sand nexus
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I think it’s mks robin nano v3

hybrid blade
# sand nexus I think it’s mks robin nano v3

Ok, your board supports swapping the drivers individually. So just get ahold of some silent stepper drivers and replace the ones in there. You’ll have to recompile firmware to do this though.

sand nexus
hybrid blade
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No problem!

sand nexus
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?solved