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Great question! There are 3D printed bearing, but they're not as performant as a ball bearing. They're actually magnificent and precise little contraptions.

Well for this model the blinking indicates a power line, per the manual 😅

Great suggestion, if I would start again I would use 1 large bearing instead of 2 small ones. And try different lubes.

I did just this and built a synthesizer with them ;-) th-cam.com/video/xIgIhpeJyNA/w-d-xo.html However a lot of them had rust on them and weren't in too good of a state, the quality differs a lot per fidget spinner.

Can you explain how this would make them spin longer?

@JensMakerAdventures well, isn't your whole concept based on the fact that when two same-pole magnets (on separate adjacent 'shapes') meet, they repel.... Whilst watching your vid I noticed that a lot of their curved bottom edges (without a magnet) passed by an adjacent magnet.... And so, surely if the curved end had a magnet it would have to repel, this making it spin for longer 👍

@@stuffoflardohfortheloveof I think the amount of energy in the system or the amount of friction will not change. But the impacts will occur more often and these take energy out of the system. Therefore I think the spinners would actually spin for a shorter amount of time.

Haha your process is such a journey. Thanks for sharing.

It would have to be one on the top row, since the impulse can only travel downwards. But that would be very satisfying, just having it on chill mode in the background

I think lubricating with light lubricant might work. Why would you wanlt to use the power tool at high speed? To even out imperfections or spread lube?

@@JensMakerAdventures it would ware the bearings in and take off any spots of hardened grease.

Build it! That would be awesome! Yes, an oil might be the way to go. Not sure it would salvage these ultra cheap crappy bearings, but next time I will try that!

Wonderful, having those codes! However I think the first batch did not have shields. But Aliexpress is kind of the wild west of buying parts, haha.

@@JensMakerAdventures I suggest asking an AI like perplexity for a complete list of bearing codes. Super useful.

Thank you! And that's a wonderful analogy!

Excellent recommendation, thank you. I only used the slip joint pliers for the prototyping, but later I pushed the bearings in using the table (press fit). I'm sure the pliers you suggest would do a better job and for more demanding projects I will keep this in mind!

That's nice! However here they are 10x the price I paid per bearing 🤔

What is 'the race'? What do you mean by the preload?

That would be amazing. I think the less power you have the more the friction and quality of the bearings becomes critical though. But something like this would be sweet :)

Those are great! I had one to try out and it was very good, however free spinning it was as good as ungreased metal bearings. But ceramic bearings are really expensive right? I wanted the sculpture to be affordable for others to build as well.

@JensMakerAdventures yeah the ceramic ones are likely more expensive. Btw there's two kinds of ceramic bearings. There's the all ceramic ones and the hybrid ceramic ones whereby only the balls are ceramic and the rings are metal. As a cheaper alternative clean the metal ones really well, dry them and lubricate them with fine graphite powder.

That would be cool too 😲

Are those affordable?

@JensMakerAdventures around $4.5 for 10 pieces for cheapest sizes 10, 16 and 22 mm outer diameter

@@izobrr Sounds good, I'd love to experiment with them. Do you have a link?

😂 "stare into the abyss" I love that

Thanks for your feedback. I also get annoyed with some creators and overt swearing. I get it. However it is also a tool for communicating my emotion and process and in this case frustration plus a bit of comedy. Can imagine it's not your taste. Anyway I do hope to see you back on the channel at some point! 😃

@@JensMakerAdventures good content. Best of luck with channel and making!

You could very well be right. Also given the risk of corrosion. What is a thing though, is that the performance of these bearings was iffy even in factory delivered state. Some of them are perfect without lube and some terrible. I think if I'd used a good brand it might have been a different story.

Good question! Unbalanced they would not automatically reset to have the magnet pointing upwards. So I deliberately chose this amount of 'unbalancedness' :)

With hand soap and a toothbrush, wow. I would not have imagined that method. I don't think these bearings are rust resistant, wouldn't residual water be a problem with this method?

@JensMakerAdventures I use a lot of soap and a little water, then I don't rinse off the soap. According to my Google research, soap and water is a fairly high alkaline solution and I think it helps prevent rust. People have been using lye to protect steel and remove rust for a very long time and soap is made from lye.

@@jacobopstad5483 Wow, I'm amazed. Thanks for explaining!

Thanks for your wonderful comment!

YES! Making it mechatronic was my first plan too. However things became complicated and I really liked the way it was without electronics. Do post back here if you make your own version! :)

Hahahahaha, this made me laugh out loud 😂

I looked up what that is and you're completely right 😁

That's a fun question! And thanks for your sub. Yes, I'm looking forward to V1.0. Already tried the RC2 and it seems like a nice upgrade. Especially the topo naming problem. First of all I think it's amazing that the FreeCAD project even exists. It's an excellent option. However there are a lot of things that could use some love. Things like getting clear error messages, intuitiveness, cleaning up the model view (if you do a big project with booleans etc. it's near impossible to manage) and making sure the features that are implemented have clear descriptions of all their functions, prerequisites, options and that there's fleshed out documentation. Also, I keep finding a lot of bugs, but many are already reported or just so out there I imagine the whole community is aware. Again I love this project and I am looking forward to where it will go. Huge props to the developers and community!

Hi there! That's awesome to hear ✨😀 I would love to see what you have made!

Yes! 💪 took some pain to learn but it's O.K. now

Thank you! You just made my day with this comment 😃

Bedankt!! 😃

Hahaha the kinetic sculpture of emoji. I like it 😁

magnetic, or electromagnetic

Good idea!! If I make a newer version I will definitely do this, already bought some enamel wire to make coils, but figured the sculpture was already nice enough to share

@@JensMakerAdventures Perhaps a mechanical wind up kitchen timer. Or for an infinite version, maybe a strong electric clock mechanism with a magnet attached to the second hand. Attached so that it can slide up and down on the hand, for adjusting the position.

@@Mavrik9000 Those are some really cool ideas!!

Hahaha 😂 any tips? I read somewhere hold something which is grounded but that room has no grounding so couldn't try that.

Thanks for the kind words. I could have tried acetone though it's less accessible than the technical fluids I tried. Maybe that'd done the trick. Thanks for the suggestion about SKF, I might try their product. I wanted to keep the prices accessible but maybe I shouldn't have even bothered with the ultra cheap bearings, in retrospect

@@JensMakerAdventures That's very fair. Keep up the great videos!

@@dantesmith3664Thanks for the kind words! 😃

@@JensMakerAdventures Any hardware store or drugstore/cosmetics store should have it. Look for nail polish remover if you can't find it in a hardware store.

Thanks for the advice. I think you're right, at some point I think moisture in the air might take its toll on the bearings. I decided to go and see what happens, maybe it will not be that bad and maybe I need to learn about lubrication. What made me decide to postpone is that I can evaluate if I like the sculpture as is, without spilling oils or possibly increasing the friction in the bearings and see them in optimal performance. I might do it differently if I make a new version

From experience with fidget spinners, graphite works the best but is noisy. The bearings will make a whirring noise, but maybe that's ok for you. I landed on bike chain lube for silent spinning.

@@JensMakerAdventures You might try silicone spray. I don't know if it would work, but it's definitely a lot thinner than grease. Setting up one with a motor that just spins it, perhaps from geared teeth added on to the outside half circle part, and leave it spinning for many hours might give you a good idea of if the process works for what you need or not.

I suggest a Teflon-based bike chain lubricant. It is a convinient small tube and extremely thin. Mine is a Tri-flow brand

​@@JensMakerAdventures I would recommend lacquer thinner for removing the grease, and something light like sewing machine oil to prevent rust. Cool stuff 👍

Hey Lowxy! Haha yes, a lot of swearing 😂 Thanks for the kind words and yes, now that you say it they really do look like umbrellas! Talk soon on the discord 😊

Thanks again for this super thoughtful comment, Herman! 🤗

@@JensMakerAdventures When reproducing this, should I take the horizontal flexibility of the mounting frame into account or is the stickyness not a big issue?

That's a really cool idea! I experimented with them however the ones I used had ferrometal in them so the magnets were attracted to them no matter what. I might just experiment with other electromagnets or making my own in the future. I also already bought the enamel wire😊

​@@JensMakerAdventuresif you make the coil of wire big enough, you can use an air core, and so there will be ZERO residual magnetic field, when the electromagnet is turned off 😉

@@the_eminent_Joshua_E_Hrouda This would be very sweet and I might try experimenting with this if I build a new version! Thanks for your input! 💪🛠👌

Hahaha 😂 thanks for the confirmation. This was actually the best reviewed tool in the under €60 price class. But it works only sometimes on some walls unfortunately 😳 when it does work it is amazingly useful though