Stepper temps

Thoughts about Raise3D, 3D printing and making in general.
Monty
Posts: 87
Joined: Wed Oct 19, 2016 6:13 pm

Stepper temps

Postby Monty » Thu Feb 16, 2017 5:34 pm

Why does my extruder stepper motor get so hot. I do a 30 min test print and by 10 mins the motor is to hot to touch.

Jetguy
Posts: 1841
Joined: Tue Mar 22, 2016 1:40 am

Re: Stepper temps

Postby Jetguy » Thu Feb 16, 2017 5:59 pm


Jetguy
Posts: 1841
Joined: Tue Mar 22, 2016 1:40 am

Re: Stepper temps

Postby Jetguy » Thu Feb 16, 2017 6:01 pm

Official guidance straight from Raise 3D.
Attachments
Adjust voltage of A4988.docx
(1.98 MiB) Downloaded 41 times

Monty
Posts: 87
Joined: Wed Oct 19, 2016 6:13 pm

Re: Stepper temps

Postby Monty » Thu Feb 16, 2017 7:47 pm

OK thanks

Monty
Posts: 87
Joined: Wed Oct 19, 2016 6:13 pm

Re: Stepper temps

Postby Monty » Thu Feb 16, 2017 8:47 pm

Both bang on 0.90

Jetguy
Posts: 1841
Joined: Tue Mar 22, 2016 1:40 am

Re: Stepper temps

Postby Jetguy » Fri Feb 17, 2017 2:06 am

So are you printing with the lid on? Just trying to figure out the situation. If they are too hot, then turn it down in 0.1V increments.
So it's it's 0.9 now, go to 0.8, then 0.7.
Because, we go all the way down to 0.6V when using a Bondtech, but that is for 2 reasons, the Bondtech replaces the aluminum block with SLS printed nylon and that means no more heatsink to remove heat from the extruder stepper and also, the Bondtech uses a smaller hob drive wheel pushing and gripping the filament resulting in a force increase for the same amount of torque. Therefore, we can reduce the motor current and not worry about torque loss, we make up for it in gearing.

Monty
Posts: 87
Joined: Wed Oct 19, 2016 6:13 pm

Re: Stepper temps

Postby Monty » Fri Feb 17, 2017 2:13 am

Turned out the ribbon cable by the extruder is faulty

Jetguy
Posts: 1841
Joined: Tue Mar 22, 2016 1:40 am

Re: Stepper temps

Postby Jetguy » Thu Feb 23, 2017 3:46 pm

Hey, please see my other thread on this topic. If you have the newer BOHONG sourced motors, there is additional guidance I am developing. viewtopic.php?f=4&t=1460


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