Extruder motor clicking after changing to direct drive extruder August 31, 2015 06:37PM |
Registered: 9 years ago Posts: 25 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 03:07AM |
Registered: 10 years ago Posts: 14,672 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 03:48AM |
Registered: 9 years ago Posts: 25 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 04:35AM |
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Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 04:54AM |
Registered: 8 years ago Posts: 445 |
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Eddy
Only problem is that my extruder starts making these terrible noises not even a quarter turn on the pot screw, and if I continue it stops completely
Thanks,
Eddy
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 06:21AM |
Registered: 9 years ago Posts: 25 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 07:11AM |
Registered: 10 years ago Posts: 14,672 |
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Eddy
Okey, I hope I didn't break anything will fiddling around, then, since I was turning 1/4 turn at a time...
Still, the problem persists. I will tune the driver properly to double check I'm not missing a "point" where the motor is both strong enough while not getting too hot.
Koenig: is my 58mm Nema17 a "long" Nema17?
I have an additional question; How can one get too much torque? I mean, if the filament gets really hard to push through the hot end and the extruder starts grinding the filament, then surely I have a bigger problem than a too powerful motor?
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 07:24AM |
Registered: 9 years ago Posts: 25 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 08:23AM |
Registered: 10 years ago Posts: 14,672 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 12:28PM |
Registered: 9 years ago Posts: 25 |
Re: Extruder motor clicking after changing to direct drive extruder September 01, 2015 01:00PM |
Registered: 10 years ago Posts: 14,672 |
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Eddy
So to conclude on the matter I do have a strong enough motor, but before reaching its optimal current ratings I've already maxed out the drivers current ratings.
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Eddy
To tackle this the best thing to do is get a driver that handles more current, so my motor can perform its best...?
Re: Extruder motor clicking after changing to direct drive extruder September 22, 2015 03:01AM |
Registered: 9 years ago Posts: 535 |
Re: Extruder motor clicking after changing to direct drive extruder September 24, 2015 11:41AM |
Registered: 9 years ago Posts: 535 |
helloQuote
dc42
You have discovered why most people use geared extruders. To get enough force from a direct drive extruder using a Nema 17 motor, you need to run the motor close to its rated current. Even then, a short motor won't produce enough torque for some types of filament, and you may need to use a longer motor.
I suggest you look up the specifications of your motor, then adjust the driver pot to run the motor at 80 to 85% of its rated current. If that current is too high for the driver not to overheat, then you will need additional cooling or a better driver - although if you have the Ice Blue ones from T3P3, they are already about as good as plug-in drivers get. Drivers integrated on the electronics board can generally handle higher currents because they are cooled better.
My Kossel used to have the 5:1 geared extruder from my T3P3 Mini Kossel kit, but I found it was over-geared for the long (48mm) motor they supplied. It now uses a 3:1 Ormerod geared extruder.