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[Closed] MK3 Extruder Motor getting hot  

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Victor
(@victor-3)
Active Member
MK3 Extruder Motor getting hot

Hi guys,

This is my second day with the Prusa i3 mk3. I gotta say it works wonders, it's silent and the print quality is amazing.

I just noticed that the extruder motor is getting quite hot even during small 30 minute prints.
I don't have anything that can measure exactly the temperature, but it's hotter than the heated bed but not enough to burn my fingers.

Is it normal? If not, how can I address this issue. Just a reminder, I haven't noticed any problems on my printed parts.

Thank you.

Posted : 30/12/2017 4:09 pm
Victor
(@victor-3)
Active Member
Topic starter answered:
Re: MK3 Extruder Motor getting hot

I think I found the answer on this post, but mine gets to same temperature except it gets hot like that after a 30 min print.

https://shop.prusa3d.com/forum/prusa-i3-kit-building-calibrating-first-print-main-f6/extruder-stepper-motor-gets-very-hot-too-hot--t121.html

Post - "The extruder stepper motor gets very hot after ~2 hours of constant printing. I cannot touch the metal cover for more than ~5 seconds and then it hurts badly in my fingers. Is this temperature "normal"( I know we all have different level of resisting pain 🙂 ) for your stepper motor?"

From Josef Prusa - "I posted a picture from thermal cam somewhere here on the forum. It is around 70°C, which is completely fine for the motor and won't hurt it's performance 🙂

Did you print something cool already?"

Posted : 30/12/2017 4:47 pm
HPrinters
(@hprinters)
Active Member
Re: MK3 Extruder Motor getting hot

Hola tengo problemas con el extrusor en una mk3 se calienta mucho es normal o hay que regular menos corriente a los drivers?

Posted : 04/02/2018 8:38 pm
Olef
 Olef
(@olef)
Prominent Member
Re: MK3 Extruder Motor getting hot

This question has been asked and answered several times. Normal operating temperature of the extruder motor is in the 50 - 60 degrees centigrade range. The motor can operate without issue up to 100 degrees C. Source: Jo Prusa.

Posted : 04/02/2018 9:10 pm
devilhunter
(@devilhunter)
Reputable Member
Re: MK3 Extruder Motor getting hot

The problem with hot extruder steppers are not malfunctions because they get hot (although they behave wonky above 65 degrees), but because they transmit the heat over the shaft onto the filament string.

Meaning PLA will get mushy very fast if you have a print with more than a couple of retractions. If you don't print away that warm and mushy filament very fast, you are going to have a problem.

Print failures are guaranteed with hot extruder motors.

Things like this can not be printed with steppers that go above 55 degrees celsius.

https://www.thingiverse.com/thing:1388237

I could only print it when i added a 40mm fan that blasted onto the motor.

PETG and ABS will have no problem with hot motors, but PLA will never forgive you.

Posted : 04/02/2018 10:28 pm
Ismael liked
HPrinters
(@hprinters)
Active Member
Re: MK3 Extruder Motor getting hot

😀
This question has been asked and answered several times. Normal operating temperature of the extruder motor is in the 50 - 60 degrees centigrade range. The motor can operate without issue up to 100 degrees C. Source: Jo Prusa.

Pero tengo una impresora de menos de la mitad de precio una A6 y no calieta el extrusor esto parece una falla de diseño.
Se le podra poner aigun disipador?

Posted : 05/02/2018 12:56 am
HPrinters
(@hprinters)
Active Member
COMO VER EL TIEMPO DE IMPRESION EN SLIC3R PR

HOLA ESTOY APRENDIENDO A USAR ESTE SOFWARE YA QUE TENGO LA IMPRESORA HACE 3 DIAS ARMADA UNA MK3 Y NO SE DONDE ESTA EL TIEMPO DE IMPRECION QUE ME GENERA EL GCODE ...

Posted : 05/02/2018 10:01 pm
stranger
(@stranger)
Active Member
Re: COMO VER EL TIEMPO DE IMPRESION EN SLIC3R PR


HOLA ESTOY APRENDIENDO A USAR ESTE SOFWARE YA QUE TENGO LA IMPRESORA HACE 3 DIAS ARMADA UNA MK3 Y NO SE DONDE ESTA EL TIEMPO DE IMPRECION QUE ME GENERA EL GCODE ...

No lo muestra yo también utilizo ese software y tengo el mismo problema al no saber cuanto tiempo tardan las cosas,lo que hago es utilizar cura y trato de poner los mismo datos que en el slic3r o lo más cerca que se pueda y así me doy una idea de cuanto tiempo tardarán

Posted : 05/02/2018 10:25 pm
stranger
(@stranger)
Active Member
Re: MK3 Extruder Motor getting hot


😀
This question has been asked and answered several times. Normal operating temperature of the extruder motor is in the 50 - 60 degrees centigrade range. The motor can operate without issue up to 100 degrees C. Source: Jo Prusa.

Pero tengo una impresora de menos de la mitad de precio una A6 y no calieta el extrusor esto parece una falla de diseño.
Se le podra poner aigun disipador?

Yo hice la misma pregunta y me respondieron lo mismo que era normal,yo también tengo una anet 8 e igual no se calienta de esa forma

Posted : 05/02/2018 10:27 pm
Valler
(@valler)
Active Member
Re: MK3 Extruder Motor getting hot

Hi, I recently notice this problem too, after failed all of 2 hours+ print job with PLA.
Does anyone found the solution of this problem yet?

Posted : 16/04/2018 3:09 am
billy jennings
(@billy-jennings)
New Member
Re: MK3 Extruder Motor getting hot

😀

Posted : 06/05/2018 8:27 am
billy jennings
(@billy-jennings)
New Member
Re: MK3 Extruder Motor getting hot

👿 hello.... I have been using prusa control and have had kit done for a week, have had mixed results with prints finishing. I have been experiencing my filament not being able to un extrude completely cause of a bulge at the tip of filament. My larger print have failed at the same area after 3 attempts. I noticed my extruder motor was very hot when I caught the last fail, which the nozzle was jammed. 1 failure before this one was an over night print of the same thing. It seemed to push the jam out and continued the print fine(still probably not salvageable). I wonder if the extruder motor is causing this problem after a similar amount of time. Both times failed around 4 hours into print. Any suggestions would be helpful.
Ps. Thanks and sorry if this is confusing, its my first forum contribution 🤔🤬

Posted : 06/05/2018 8:36 am
billy jennings
(@billy-jennings)
New Member
Re: MK3 Extruder Motor getting hot

I see people viewing pictures, any thoughts on the issue. It's my second printer, always figured out the problems on my monoprice i3. But the hotend isn't this complicated. I built the mk3 kit, everything was perfect after wizard check. My belt tension is X:265 and y is 296.. I think y is high but don't think that would effect e motor. Ok, back to fiddling peace!👌🤟🤔

Posted : 06/05/2018 6:43 pm
john.v11
(@john-v11)
Estimable Member
Re: MK3 Extruder Motor getting hot

The extruder getting hot issue has been corrected with the latest test release firmware, 3.2.0-RC2.

See the announcement thread on where to download.

Posted : 06/05/2018 9:01 pm
Stargazermatt
(@stargazermatt)
New Member
RE: MK3 Extruder Motor getting hot

Referencing DevilHunter's adding a 40mm fan- how did you do it?  My son and I are having problems with the extruder gear getting warm enough during a long print that the PLA is getting soft and hard for it to keep moving, leading to it not extruding in the late parts of the print.  We would be interested in seeing a picture or any details about how you were able to mount another fan so that it blew into the extruder gear area.  Thanks a bunch!

 

Stargazermatt

Posted : 09/05/2019 1:45 am
Ismael
(@ismael)
New Member
RE: MK3 Extruder Motor getting hot

No puedo imprimir en PLA cosas muy elaboradas ya que se atasca el filamento, a la altura del disipador, mi teoria es que es culpa del ventilador, pero este funciona correctamente. Como has solucionado el problema? Has agregado otro ventilador para el motor o has cambiado el noctua de 5V por otro mas potente?

Posted : 08/08/2019 9:25 am
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