Strange Rotary Module behaviour

Diameter is correct. Its the standerd snapmaker file just load it and print no adjustments.
And it is not a Luban issue because with or without luban if I try to rotate via the buttons for the B axes it doesnot rotate and if I keep tapping the buttons it wil randomly rotate. But the motor makes a sound.
To me it looks like something is slipping. I think its either a faulty stepper-motor or transmission.

Ahhā€¦OK. Then, with a faulty rotary that limits or restricts rotation, that can easily explain the squeezed output. Does the ā€œrun boundaryā€ do the sameā€¦runs a squeezed boundary or does it run the correct sized boundary?

I had mine freeze at 60% and just start ā€˜repeatingā€™ the motion over and over again like it hit a stop. Interestingly, the change I made from the original file was increasing the ā€˜dotsā€™ from 5 to 10.

Guess Iā€™ll send snapmaker an email.

First boundry rrun was compressed, second was perfect third,forth,fifth nothing.

Tech support told me that they have reported the problem to their R&D team.

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Got in touch with SM Tech sup and I got a replacement module.
Although this module had the same problem first time I tried it, it got better the more I rotated it.
Now it rotates just fine.
So big thumbs up for team Snapmaker.
Still I am curious what the issue is.

i also had a strange behaviour, my lion model worked well for about 60% then the while model shifted by approximately 90 degreesā€¦ recreated the gcode and tried again. this time the model twist/shift happened at around 70%. donā€™t know what to doā€¦ the simulation in luban looks goodā€¦

I appear to have a similar issue. It worked perfectly in the example epoxy, but when I switched to the ā€œdefaultā€ material, I get the same, after 30 some hours. Any solutions?


I also noticed at about 30 percent in the model looks like it increased by a mm or so.

STILL same problem here: After 60 Hrs the rotation stopped and the bit cut a straight line while hoppingā€¦

Setting: 0.5mm plunge, V-Bit, 0.5mm Step. Slicing:linkage. ETA:270hrs, Bug after 72hrs.

Any workarounds or setting suggestions from the user community?

Any reaction from Snapmakers R&D: The bug(?) is quite old and not solved? Any explanation how and what I did wrong? Did I miss something?

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Same problem here. different models. reboot machine in-between. 70% in the rotary module just stopped turning. on the first carve, it cut a groove fwd/back. on the second carve it didnā€™t move forward and backward at allā€¦ just kept cutting in the same hole deeper and deeper.

Really a show stopper on the rotary module. Real mistake to buy it apparently. Iā€™ll add a review for it steering everyone away.

I would recommend reaching out to snapmaker support if youā€™re still having issues. The forum is made of users, and if we donā€™t know where to start with an issue, you might just not get an answer. Support should be more helpful in those situations.

I did report the problem to tech support when I first started this thread. They replied saying they would forward the issue to the R&D team. But having more people contacting tech support canā€™t hurt.

Appreciate that Bobby. I havenā€™t gotten a lot of help from them and it seems the crew here hasnā€™t either.

Thanks!

Anyone know if this has been resolved or any new insights coming out? I am having the same issue - module stops rotating 60% or so through a CNC project and then only runs north-south (Y axis) for awhile and eventually stops. When I go to the controls immediately after this issue, the B axis controls turn a couple of times and then stop responding to the screen commands. I am perplexed because this is inconsistent. I use the same file to cut numerous good production (item at left) and then without changing the file or even the origin, I get 60% goes ok and then this fail (center and right).

Hi All,

Anyone have any fix for this?!

I just tried two cnc carvings and after around 24 hour mark my rotary module stopped spinning and cnc bit just carved a deep trench into my wood. Very disappointedā€¦

Did you ever get a resolution to this issue? I am experiencing this with mine - but lasering and the Ray. My gut says there is an issue with the rotary itself - a bad batch. Do you remember when you purchased yours (you can check this via your snapmaker account on the shop). Iā€™m in contact with the Snapmaker team to try diagnose and resolve this at the moment.

I ordered my rotary module June 2021. I have not had resolution.