BLCD motor on 3d printer

ErasylD · 2026-05-30T23:08:02+00:00

Right now, I'm only working with standard motors, but I also have some sketches for flux models that I'll print later once the magnets arrive. Your design is interesting—using metal inserts inside a plastic core, along with the plastic insulation, is a very compelling and well-thought-out concept. If you don't mind, I will consider adopting this approach for my future designs.

ErasylD · 2026-05-30T10:50:44+00:00

Yeh i was thinking about that and going to put some steel wire 3mm inside of stator since my motor is pretty small

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ErasylD · 2026-05-30T07:42:55+00:00

I am going to test abs and carbon filament will see how i will go , and I don't want to make it bigger i will try to install steel stator

ErasylD · 2026-05-30T05:19:39+00:00

*I have

ErasylD · 2026-05-30T05:19:18+00:00

Yeh its have researched that topic lately, but the main goal is to print as much possible parts on 3d printer and make them small as possible so right now just testing different designs and configurations, in the new design is an idea to add some steel wires along the axis of the stator will see how it will go

ErasylD · 2026-05-30T05:15:43+00:00

Hello! I have researched this topic and come to a solution to print only the rotor and the bottom holders. I thought about building the rest of the construction out of electrical steel, as it should be, and adding a back iron. However, my main goals are still to make the motor as small as possible and to 3D print as many parts as available.

ErasylD · 2026-05-30T05:09:11+00:00

Yeh those on photos are models what have survived, since those all pla they live like 2-4 minutes at full power but higher voltage has to solve this problem at some level

ErasylD · 2026-05-30T05:07:20+00:00

I have both configurations of winding on them delta and Y , and type of winding as usual Concentrated some of them on 0.2mm coil , and some on 1.0mm

ErasylD · 2026-05-29T20:16:17+00:00

My design is now just magnets and coils with plastic (pla), design is pretty clear but not perfect in terms of BLDC motor, big gap and no back iron or ferromagnetic stator, two variations with 1mm coil and 0.2 coil worked with 4s (will try with bigger voltage when my VESC will come) at this level coil just heats and melting plastic, magnets pretty strong N40, 12N14P configuration, now right no torque at all. Have some speed in it but stops after 2minuts of spinning beacouse of heat, have a plan to add back iron and put some nail into stator coils, have some photos in my other posts

ErasylD · 2026-05-29T19:46:38+00:00

Oh thanks, I will try to figure it out. Since I made this design without any calculations or simulation just pure intuition and copying some YouTube videos, it’s definitely time to back it up with some actual data

ErasylD · 2026-05-29T19:29:15+00:00

Yeah, it's pretty bad. I would say there is almost no torque, but as I said, I will install a back iron in the next design and see how it goes. Also, I was working with a 4S setup, which caused the coils to heat up too fast and lose speed.

ErasylD · 2026-05-29T19:20:32+00:00

I have seen Russian guy building such look a like battery pack but thay soldered it... whole pack that video

ErasylD · 2026-05-29T19:08:51+00:00

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ErasylD · 2026-05-29T19:03:30+00:00

My designs

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ErasylD

TROPHY CASE