Thanks for sharing this video. It's a great dejavu :-) - I've done similar mistakes, when I created my first design. A "traditional" BLDC stator design doesn't work well with non-ferromagnetic material. The copper wires need to be much closer at the magnets. Similar as coreless or ironless designs.

Been winding this coil for 4 weeks. I no longer remember the face of my girlfriend.

I love how you show your failed attempts, it makes me feel so much better at my burned up projects. Great job BTW..

I love how you give proper credit. That is the spirit. Keep up the good job!

I discovered this channel recently and absolutely love it because it showcases rather unsuccessful as much as successful attempts which is different from other channels and it teaches more because not everybody tells you what setup works and what doesn't. It also creates an environment of discussion much like the ones found in Universities where students and teachers discuss an idea how it came to be, how it works and doesn't work which is the environment and mindset that allowed hobbyists to thrive in the first place. I need a couple of days to watch the videos relevant to my work but so far it's great

Failure is a way to success (said by me, the man that fails 9/10 projects).

frickin' awesome! Even a fail is progress!

I was just looking at videos on that filament and in 2 minutes you post this. Worth it being subscribed

You are a great educator! Thank you for your wonderful videos. I always learn from them. Keep pumping out content. The Internet needs you!

I love this, even though you way over complicated the testing for the torque, it was an awesome build.

Scott shows the way to innovate!

I've tried 3D printed parts for many different high heat applications. PLA always gets soggy, and ABS works somewhat better, but still gets soggy. My guess is if you really wanted to do that right, you could use Nylon, because it has a higher melt and (I think) glass transition temp. I always wanted to try this, this is seriously really cool!

You will reach 1 million subscribers by the end of this year. Your videos are so clean & helpful!

My Finger Automatically taps the video after reading Great Scott written under.

I love you don't shy away from your failures

Excellent video. I try never to underestimate the value of negative data. My failures have always taught me more than my successes. Well done!

I really appreciate your video because in science, most are only focused on success but there are a million failures that come in experimenting. Failure is valuable data and shows just how hard the see e things can be. Please keep up the great work. I always learn something new from your videos

Too often people hide their failures and only publish findings if considered satisfactory. Thank you for showcasing your failures and detailing problems you had with your experiment for all of us to learn from.

Fantastic work, dude!!! 😮 It's pretty awesome they worked at all!!!

Really different kind of video. *I like it!*

Thanks for sharing your failures with us. I didn't think this was going to work but it was still fun to watch.

Your experiment was not a failure. I'm sure not only you, but all of us watching your channel, learned a lot from it.

This was not a fail. It was an opportunity to learn. Thumbs up for posting.

Learned more from your channel than I did through my entire school years

Of course I enjoyed the video. GreatScott is also very entertaining and has a great ingenuity ! Cary on and make a motor that rocks !!

This is amazing! Thank you so much for posting!

1Million subs soon !!!!!!! Be ready dear Great Scott

Great Vid. Would like to see a follow up where you 3D print the thin laminations with the iron protopasta and stack them (maybe make a hole or holes in each laminate and use a non-ferrous pin or pins to keep them aligned). My other thought would be to laser cut your laminations. The cool thing about these trials is that with a little ingenuity you can use 3D printed parts in a lot of situations.

I love that u did that... i never got the time for that and so wanted to do it... and u answered a lot of my questions.... thx man

Good luck with you subs sir, you're about to reach 1M subs. Congrats 😉

Random UKpostsr: >"Is 3D printing a motor possible?" Watch dogs 2: >3D Printing ready to use guns and drons

I think the reason why 3D printed motors had so high RPM in no load operation in comparision with regular motor is because every DC motor wants to spin with RPM so high, that voltage induced on armature is equal to supply voltage (with opposite polarity, so armature current is close to zero in no load operation) . In regular motor almost all magnetic flux from permanent magnets is flowing through core of coils, so according to Faraday´s law (Ui=-N*d phi/dt), the induced voltage is high enough even at small RPM. In 3D printed motor, the core of coils has very poor magnetic conductivity (even magnetic filament, it has relative permeability not much higher than 1), so only small part of permanent magnet flux is flowing through coil cores (the rest of flux is flowing through surrounding air), so the RPM needed for Ui=-N*d phi/dt to be equal to supply voltage is much higher. The results would be much better, if the core was made from epoxy resin mixed with high amount of iron dust, that would be awesome video by the way :)

Magic. Keep up the good work.

Nice video! I definitely learned something! One learns the most when failing! Keep up the good work!

Keep going with this project it’s amazing

I made a laminated iron rotor from zinc coated iron sheets. You can "stamp" (saw) them out stack them up and then soft solder them together. After some filing and balancing it worked really good. BUT you need to have the patience. I had tow saw 50 pates with a jigsaw. It's important to clean them up and press them together before soldering.

What’s funny is that video you kept mentioning I had already seen it and loved it lol

Great video as always man! Have a happy holiday!

Excellent video. Any experiment that gives a result generates new knowledge, even if that knowledge is how not to do something.

Really great video. I was thinking about pursuing something similar. This gives me a good place to start.

5:14 : what is a Macrenwiiii??? Just kidding, I raised an eyebrow for two seconds before seeing it written down µH.

Thanks alot for all the vast knowledge.

Oh man, I rewind polyphase AC stators for a living, I was grimacing when you melted that first 3D printed core, lol.

Using normal 0.2mm steel sheets ("Billiges Gießkannenblech") works totally fine for building motors. The efficiency will not be super high end, but it will be fine. They do need to be coated with insulating laquer though.

Pure awesomeness!

Fantastic experiment! 👏

This is a cool thing to print. It makes 3d printed machines cooler and cheaper.

This could be the beginning of the revolution. :-)

Great scott is one my anothr best channel

I love this videos about BLDC motors!

dude what a coincidence I was watching the 3d printed video this morning !

Great Project! love your videos, thank you!/i have subscribed.

Very Excellent project 👍

See you next time Scott!

You live and learn Scotty!

Awesome as usual.

First of all thanks for the great video, you're awesome. By the way I think that the reason is the air gaps that result from the 3D printing and the magnetic properties of the PLA mateiral. To illustrate, power transformers have laminated steel sheets but virtually no air gaps, thereby reducing eddy or leakage currents and increasing the magnetic properties. However, future and other hi-tech 3D printing technologies are reducing these air gaps, so the idea is very valid!

Great Scott!

you make my day bro

Very informative ,Thank you 👍👍👍👍

Yoiur videos are amazing! Thank you!

Great video. Glad you shared even though the results weren't all ideal. Getting into exactly why something fails is always useful - and is there a way to stay on the right side of the fail factors. Do you plan to follow up on this at all? For example, if we cannot achieve useful power densities using (PLA FDM) 3D printed parts, can we change the format of the motor?

Would printing the stator with "slots" in the cores be possible? In the slots you could glue in steel, and possibly help up the inductance.

So informative. Thanks so much.

Great is great... really watching your videos is an inspiration for the hobbysts.. thank u Great.. :)

love his videos

You are amazing!!!! glad to be a Patreon Supporter!!!! You are the best! I've been wanting to find a way to make my own motor in a practical and economic way. Could it be possible to make a transformer with the same method?

Great work

You will definitely need neodymium iron boron magnets instead of ferrite magnets if you hope to have usable torque. You might be able to 3d the stator hollow and fill it with iron filings to improve the permeability of your core.

to calculate the efficiency (or say power) you can directly use formula....... because you have all the parameters.....RPM and torque. it is enough for calculating efficiency. check torque RPM and power relationship

Good afternoon, another simple way to measure power of the motors, would be connecting in a motor generator, congratulations for the excellent video.

Excellent video. Thanks.

I'm sure it's been said but you'd be da MVP of any crew in a post apocolyptic scenario. And very interesting project as usual

Thanks for allowing us to learn from your mistakes :)

Thanks for sharing your failure! It's easy to assume that things are easy when you don't see the failures that looked like they should have worked!

Will you be making videos on the electric scooter build? I had this indea a few years back, but my electrical skills and knowledge is holding me back, so I'd love to see you do it! Also, I don't understand half the things in your videos, but I enjoy watching anyway, haha.

The experiment wasn’t a failure the expectations of your hypothesis were high but you leaned something so in the end a successful experiment.

Seems it might be a synchronization problem. That might be possible to remedy by simply introducing a flywheel. More rotational mass. Would be very interesting to see what sort of efficiency you could get out of your stators if you can manage to get your controllers to actually, well, control the motors. I hope there is a part 2 in the future.

i bet greatscott(!) will end up to become a carpenter .

1:20 was a literal ' GREAT SCOTT! ' moment :) iron pla

I would like to see an experiment of effect of ac wood cutter on ac sine wave and how to improve it Cheers rab

1 million, here we come!!!

Nice! You should try PCB Motors 😉 brushless motor esc are usually designed to cater for specific motor parameters. Given that the torque of your motor changed it is probably failing the open-loop startup algorithm of the esc

Don't forget that motor cores are exposed to physical stress as the motor load increases. Being "laminated" plastic may be become a problem in larger operations like e-bike etc. By Newton's law, thoose magnets are actually pushing thoose windings in the opposite rotating way so they move. And windings are fixed to the rotor. There has to be a reaction force/moment on stationary parts which transfered to motor mounts via stator.

I hope you stay tuned to the project. I drive a Simson myself and I am very excited about the idea.

Great video!!!

"Ferromagnetic" material is not what you want in a motor stator since it does not conduct magnetic flux very well, but instead, generates a field on its own like a permanent magnet. Ideally, you want something made out of ferrous metal which is sandwiched in between electrical insulators (this is what limits the eddy currents). An option would be to use laser or waterjet cut thin pieces of steel and insulating sheets in between. The high inductance of the regular BLDC motor already gives you an idea of the Kt (torque per amps) value of the motor which is a lot lower if you don't use flux conducting material. Low torque doesn't directly mean low power, but you would have to gear down the motor to get the same amount of torque out of it.

Maybe the motor didn't reach self-synchronism in your set up and didn't start up because the inductance values of the phases were too low and the esc could not maintain synchronism. As a matter of fact the normal BLDC motor started properly while the other two didn't want to start. This is not true, of course, in case there is no load attached to the motor, like you showed previously in the video. Let me know if you think this is a possible interpretation of the problem. Great work as always.

Great work. I would also like to build such an engine. Is there a building instruction for it?

I really need to take your example and be brave enough to post fails, I've had about three in the last two weeks and haven't released a single video because of it!

GreatScott, you should set up a 3d printer with duel heads so that you can print a layer of the magnetic filament and then a layer of abs, over and over. The one in the video allows eddy currents to form, decreasing efficiency.

Gutes Video wir immer👌👍 Weiter so!

You've still performed a useful part of the scientific process: documenting what DIDN'T work. It shows people what is unlikely to work and why.

Simson is life, Simson is love :) wäre nice deine Simme mal zu sehen

Stay creative and see you next time

Our german engineer is back woth another awseome video!

I am hearing about the feromagnetic filament for the first time and I'm excited! Ok what I'll write is just my naive optimism, but we got conductive filament and ferromagnetic, what 'bout stick them both into multimaterial 3D printer and try to print stator right away! :D I know conductive filament has too high resistance and ferromagnetic one is not a good ferromagnet. But hell yeah completely 3D printed motors sounds like a kinda thing we need to pull off completely 3D printed machines!

Love that you used copper clad board to hammer in the bearing lol

Failure Is the best success, I've never learned much without something going wrong

Hey mate. Would love to see design and test a wind turbine generator?