Very interesting. Thank you very much.
Latest posts made by Doppler9000
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RE: Stepper Choices for 300x300x365mm Corexy, with Duet 3
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RE: Stepper Choices for 300x300x365mm Corexy, with Duet 3
Very interesting - thank you.
Do you think these will perform as well or better than the Moons?
I wasn’t sure if people were switching from Moons or other makes.
The 42STH25-1404MAC looks like a good pancake extruder option - LDO which is OEMed by Bondtech.
Edit seems like the guys on the Prusa VFA megathread had various issues with the LDO pancake extruder motor.
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Stepper Choices for 300x300x365mm Corexy, with Duet 3
I am looking for a setup capable of excellent performance, but that can be run as near to silent as possible.
As I run through the stepper options, I am getting caught in a bit a do loop. Inductance limits on the speed end, torque on the acceleration end, and I am not sure where the sweet spot lies.
The extruder will be a BMG, hotend a V6 weight class unit.
Z is a NEMA 23 on a 30:1 gear, a la UMMD, so torque isn’t so much of an issue.
I have drawn up a short list from the Moons 0.9 degree offerings. I am open to alternatives that will be as good as or better (performance and noise-wise) than these.
Any thoughts?
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RE: Duet 2 vs Duet 3 - Noise Levels
@Phaedrux said in Duet 2 vs Duet 3 - Noise Levels:
@Doppler9000 said in Duet 2 vs Duet 3 - Noise Levels:
How does one determine the current requirement threshold?
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors
The typical recommendation is to set the current to 70-85% of the rated max of the motor.
Sorry, I wasn’t clear.
I meant the threshold for motor current.
I can calculate the speeds, etc., using an estimate of the masses, but if designing for quiet operation, does that mean that lower current/torque motors will work? I am assuming there are competing criteria that are negatively correlated, so it is more complicated...
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RE: Duet 2 vs Duet 3 - Noise Levels
@bearer said in Duet 2 vs Duet 3 - Noise Levels:
Given the same motors, speeds and loads, the Duet 3 is capable of being quieter.
Probably less difference between the Maestro and Duet 3 as both support stealthchop, but weather or not you want to use stealthchop depends on your speed and/or torque requirements afaik.
Unless you need the high current ability or expandability of the Duet 3, the Maestro might be an option.
Edit: Maestro will not support stallguard / sensorless homing however, but as far as i'm concerned its of less use
If the Maestro would work, current-wise, it would be ideal, as I don’t need the additional capabilities of the Duet 3.
I plan to put he board in an enclosure with 2 8” Noctua fans, so I could run it relatively hard.
How does one determine the current requirement threshold?
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RE: Duet 2 vs Duet 3 - Noise Levels
@Nuramori
Thank you!The build is based on the BLV, using the new CNC aluminum parts.
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RE: Duet 2 vs Duet 3 - Noise Levels
Thank you for the quick reply.
It is for a 240 x 240 x 320 corexy.
What NEMA 17 motors would be the quietest with the Duet 3?
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Duet 2 vs Duet 3 - Noise Levels
Choosing a board.
I am wondering to what degree the Duet 3 will reduce noise over a Duet 2 at low speeds. Any quantification?
TIA