Choosing right nema
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hello everyone I would like an help to choosing the right nema to buy for my delta printer,
My choose is between:-nema 17 super whopper from e3d;
https://e3d-online.com/super-whopper-motor-1
-nema 23 from omc;
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Hi Edo, how big is your delta? You might not need such massive motors…
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Check out this documentation page:
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors
As DjD says for a "normal" to "large" delta you should be ok with smaller motors as the point of a delta is very low moving mass.
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that said if you wanted to build something this big:
https://tractus3d.com/t3500-Biggest-industrial-3D-printer/
that might be different
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How big is your printer?
Set some parms here: http://danalspub.com/DKcalc/
And post the resulting link (copy the URL just under the sliders).
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IMHO These are perfectly adequate for a fair size delta
https://www.omc-stepperonline.com/hybrid-stepper-motor/nema-17-bipolar-59ncm-84ozin-2a-42x48mm-4wires-w-1m-cable-and-connector-17hs19-2004s1.html for 1.8 degree motors (the 1684 are also good)
and or
https://www.omc-stepperonline.com/hybrid-stepper-motor/nema-17-bipolar-09deg-46ncm-651ozin-2a-28v-42x42x48mm-4-wires-17hm19-2004s.html For 0.9 degree ones (same again the 1684's are also good)
I use the later in the 1684 on my delta with a 360mm diam bed and 400mm build hight
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Hi Edo, how big is your delta? You might not need such massive motors…
How big is your printer?
my delta printer is 2,5m high with a heated bed of 80cm in diameter
IMHO These are perfectly adequate for a fair size delta
https://www.omc-stepperonline.com/hybrid-stepper-motor/nema-17-bipolar-59ncm-84ozin-2a-42x48mm-4wires-w-1m-cable-and-connector-17hs19-2004s1.html for 1.8 degree motors (the 1684 are also good)
I am currently using wantai nema 17 with 47Ncm, they are powerful but if I use very large nozzles example 1.0 - 1.2 every bubble or imperfection in the print is like having a mountain as an obstacle and my Nema lose steps
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Check out this documentation page:
https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors
As DjD says for a "normal" to "large" delta you should be ok with smaller motors as the point of a delta is very low moving mass.
I read this part of the guide very carefully, I was just looking for confirmation from you with more experience than me, and if these two Nema were correct for the required specifications
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I have no experience of deltas larger than 350mmx1m.
However if you are getting skipped steps and using large nozzles and want thrust to push through blobs etc.. Then I would say the large nema 17 might be a better choice, the nema 23 is more prone to midband resonance which can cause problems.
But my understanding is rapid direction changes are not able to be as rapid with larger motors.
What sort of rod ends are you using, magnetic might be trouble if your hitting fairly hard objects during printing.
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I have no experience of deltas larger than 350mmx1m.
However if you are getting skipped steps and using large nozzles and want thrust to push through blobs etc.. Then I would say the large nema 17 might be a better choice, the nema 23 is more prone to midband resonance which can cause problems.
But my understanding is rapid direction changes are not able to be as rapid with larger motors.
What sort of rod ends are you using, magnetic might be trouble if your hitting fairly hard objects during printing.
nema 23 are faster in the changes of movement?
no, do not use the system with magnets, in fact it would be too weak for my problems.
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If you can get the same/similar toque out of long nema17s as shorter nema23s, with all else being equal go for the nema17s because they normally have a lower rota inertia, at least in the sizes we are talking about.
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If you can get the same/similar toque out of long nema17s as shorter nema23s, with all else being equal go for the nema17s because they normally have a lower rota inertia, at least in the sizes we are talking about.
thank you so much I understand, I think then I'll try 17
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Also use the motor calculator at reprapfirmware.org to check that you will get enough speed.
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Also use the motor calculator at reprapfirmware.org to check that you will get enough speed.
Hi, I tried to put the specifications of the NEMA super whopper of e3d, I only have a doubt on the datasheet is written rated current 4V and 2A / phase, in the calculator rated current I have to write 2000 or 4000? Forgive me I'm not very practical in electronics
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Use 2000.
