Please let me start by saying I searched the forum for this topic or an answer prior to posting this. If I missed the topic, my apologies. That said, I see a lot of MPCNC builds everywhere that have added fans to their stepper motors. My question is, do they really get hot enough during use to ca…

[image] ScrapheapInd: I see a lot of MPCNC builds everywhere that have added fans to their stepper motors. I think you may be confusing caps with fans. Some people put caps on their steppers. They say the caps keep the dust out of the bearing, but I think it is just as much about how they lo…

With stepper current set too high, the stepper drivers can overheat and go into thermal shutdown to protect themselves (still ruins the job). In all cases I’ve seen, this happens first, long before the motor gets too hot for PLA. Even with fans for stepper drivers, allowing higher current, the moto…

Yeah, I have cooling in my box for the stepper drivers, I just have been seeing several rigs with fans on the motors themselves. Just curious.

As Robert said, it’s very rare. Can you link to one so I know what you’re referring to?

[image] New Primo build Houston, TX 12" x 16" workspace Your Builds We have chips! Well foam chips anyway! I am going to callthe build “complete” though from having 3d printers there really is no such thing but it’s cutting and mechanicals seem sound! I still need to c…

[image] ScrapheapInd: Please let me start by saying I searched the forum for this topic or an answer prior to posting this. If I missed the topic, my apologies. We don’t shame people here for asking questions that have already been answered. Searching first helps everyone. But not everyone se…