Kobra 2 Max Y layer shift Part 1.

Join me in a journey of where we end up. bought the kobra 2 max and its been vital to ensuring we made enough product in the short time we had for awesomecon this year.
Around March 1st/2nd i had a y layer shift that led to a catastrophic failure. filament clogged the printhead and spooled up in the axel of the y axis.
i cleaned the machine thoroughly, removing debris from rails, the axels, print head, etc. I updated firmware and slicers. although i still had issues in standard mode i slowed down the print to stable mode and for a minute got good prints.
March 17th the issue happened again in stable mode. i switch slicers from anycubic to prusa and , in stable mode, got 2 successful small prints. Still in stable now using prusa i got another shift March 19th. i notcied the axel screws might not be as perfect as i thought so redid the alignment, belt tension, greasing etc.
Tried the same print post calibration and it seemed to be going better this time around but still skipped towards the end.
The y axis motor feels cool, belts tensioned, greased, no debris, axels aligned, bed moved freely with no wobble. As much as I loved this printer out the box it has become unusable.
stay tuned to our youtube to hear updates on whats going on. im hoping to either find someone who has had this issue and resolved it or if i can help someone with this same issue resolve theirs.
#3dprinting #anycubic #help

[@Enjoymentboy]

I suffered increasing Y axis shift until the Y axis completely died during a print. Drive IC bit it and motor was painfully hot. Checked vref and it was WAY too high. Got a replacement board and checked the vreg and it too was WAY too high. All vref were set to high. Reset all and layer shift was better but still there and worse at higher speeds. Began investigating acceleration and jerk and found the default of 2000mms was too high. Dropped to 900 and shifting was GONE. Set jerk to 10 and acceleration to 1000 and hard set in the eeprom and now have over 4kg through it without so much as a single layer shift. Can print at 150mms and get perfect prints every time. I HIGHLY advise lowering acceleration to 900 to test, especially on a max, since the larger bed means a much greater mass for the motor to move and stop.

[@pilot3729]

Did you ever get this issue fixed. I was able to come up with a permanent solution and fixed mine after 3 days of frustration. I’m just seeing what everyone else was doing. I can say it’s not the belt tension, gears, steppers or wheels for sure…well at least for what’s plagued these issues. Fortunately I was able to use laser lights and some UV ink to identify what my issue was and once I made a procedure for it, I have done 17 prints at all speeds and it never happened again.

[@ShadowMoses112]

@pilot3729 i ended up getting a refund and sending it back. I assumed it was a board issue. Something over heated and burnt out as i was constantly using the machine in prep for a comic convention. The new kobra 2 max hasnt given me any issues yet.

[@gorobizz]

The same problrm with my printer

[@ShadowMoses112]

@gorobizz if you're within warranty id just get a new one. Return and repurchase. If not... ask for a new mother board

[@genemetz5974]

😠 'Promo SM'

[@jumagomos]

Anycubic es muy responsable con su servicio, aun así esta impresora Kobra 2 Max ha dado muchos problemas a usuarios, si tienes paciencia lo solucionas y tendras una gran impresora, recomiendo configurar muy bien la impresion antes de generar g-code, (prefiero usar software prusa), buena suerte.

[@digitalbase9396]

I have 4 of these Kobra max 2 machines all with same issue. I am not sure how to fix it. I own 2 older Anycubic Kobra max original versions which work fine. I don’t think I would buy any large format printers from Anycubic in the future if this can’t be fixed.

[@ShadowMoses112]

@digitalbase9396 whats crazy is, IMO, as simple as a firmware update. To lower the heat or power of whatever is blowing out. I noticed the slicer with its latest update added a slower quality function and since i sell original models i prefer it. Its still fast. I ended up getting a refund for this printer and buying a new one. I also had the kobra max and the 2 was a huge improvement over the 1. Although th k2m doesnt seem to be able to be a designated work horse the Kobra3 seems VERY promising and interested to see if they do a max of that . I wouldnt count them out just yet. I replaced me k2m with 2 k2ms in case i have another con and need to offload some of the work but I don't see these lasting beyond a year or 2

[@J.l198]

I’m having this issue with a large print, could be my tension of my belts, I’m not sure what’s the perfect tension ? How would I know if it’s tight to the Max ?

[@ShadowMoses112]

@J.l198 good question their manual says hand tighten til it can go anymore and do one full release backward. Tighten but don't force or over do it.

[@anotherlogin]

I’m having the same issues. Have not been able to print a single thing yet. Reviewed the same processes. The first layer comes out ok. The second layer is a sh@t show. Restored to factory. Have auto leveled. I still can’t get my first print on this machine. I’ll keep trying

[@ShadowMoses112]

Is it making the same noise? Anycubic recommended a new y axis motor and possibly a mother board. Feel free to reach out. Ive been printing for 7 years and have 3 other printers modded from mother boards to rails.

[@SeijuroHiko962]

If you use a k2m for 10 days, you will got 11 issues, and so on

[@ShadowMoses112]

@@SeijuroHiko962 while no printer is without issues. The k2m is a good printer. I won't say great but good. The firmware updates have made this printer better through time. But i agree they hopefully addressed this with the k3

[@brianveroba9059]

Was having the same issue, they are sending me a new motherboard

[@chazhaze3d]

How long have you had yours?

[@Sixppathsofpein]

​@chazhaze1580 I'm having same issues and haven't had mine even a month yet and 48 hours of printing on mine 😅

[@chazhaze3d]

@Sixppathsofpein I fixed mine, it wasn't the motherboard it was actually misaligned on the rails u Der the bed. Once I realigned it, and recalibrate, leveled, and readjusted the Z, after the rail alignment, it printed amazingly!

[@Sixppathsofpein]

@@chazhaze3d ima mess with mine and see if that's the issue

[@chazhaze3d]

@Sixppathsofpein there's a video on it. Let me see if I can link it

[@3dprintwiz]

ya i have the same noise and problem

[@ShadowMoses112]

posting an update in a minute