I came for the switchable magnet design and I left finally understanding reluctance. Robert, you are a treasure of the internet.

Thank you, Robert. You just made my day producing this video. This is a piece of a puzzle that we've been looking for since 2015. I'm excited that I can present this to the group I'm spending time with developing our MoGen Generation II. Simplicity at its finest. Sometimes we don't see the forest for the trees. You helped me see with this offering a part we've overlooked. Over the last month I'm recognizing you as a most valued contributor/producer/teacher. Brilliant! Thank you for sharing...

I can't wait to make my own magnetic pickup tool for the workshop! I was wondering how to easily disengage a magnet to release what it picks up. Now i know. Thank you! ❤️

Thank you for this very nice explanation of how switchable magnets works. The part about the field being rerouted makes it very clear.

Amazing, Robert! That's the best version of a magnetic switch I've seen on KZfaq!

Saw a recent video where a guy made a magnetic motor using this principle, had 2 steel pistons on a common crankshaft where one piston would rise when magnetic flux was on while the other piston's flux was off and retreating. Almost looks like a perpetual motion machine.

I caught up just in time. Your videos are just so relaxing yet not boring. So refreshing in today's age.

What comes to mind immediately, is that permanent magnet motor problem when the forces counteract the flow; if one could use the principle shown here to overcome that point...... Great food for thought! Thanks for sharing!

Excellent explanation for an easy application. Thank you.

Wow! Very handy contraption 🧐👍 Thanks for this Rob! ✌️

I sure do love magnets. Rob have you seen Motion magnets video on the magnet switching cylinder he’s made? A permanent magnet center with a rotating shield. Designed to shield the repulsive force then move allowing the pulling force to act. Pretty interesting.

Brill Rob.....best explanation I've seen on these and now I'll definitely be making/adapting these for my woodworking machines. Saw them years ago but selling at crazy high prices. Been doing a lot of 3d printing lately and so this will be another project 🙂Thanks a bundle! 👍

Robert you have an absolute brilliant mind.

You really give me great ideas, Robert. Thank you for sharing your passion.

Damn that's cool 🙂 When you show a quick build and demonstration at the end, it reminds me of a video I saw about magnetic transmissions.

simple and beautiful - pure zen! thanks Rob!

I look forward to these videos every day. Brilliant!!!

Fantastic presentation. Thanks for sharing your understanding.

Wow when I needed you most you were here

And the next natural step, is something that we're all able to see 😉 there is a great potensial for different "highly efficient" arrangements here, and I hope soon to be even more enlightened by Mr Murray-Smith! 🧐🤞😌🙏⚡

Latching relays using this with magnetic amplifiers, low-loss mechanical DC step-up or step-down with magnetic core inductors, small angular or linear displacement high efficiency generators...I sooo want to try making these myself using the stuff you showed in this video Rob. Love it!

Cool build Robert. I made two pernament magnet locks 4 years ago. A youtuber named Andrew Klein first made his out of wood, and then 3D printed his final version. The concept is the same, just a little different in design. If you have not seen his design, just search "3D Print a Magnetic Switch, and how it works". Great job Robert👍👍

they amazed me 50 odd years ago wheni first used a surface grinder never understood it the time thank you for explaning it

You would make a good teacher. I enjoy listening to your simple descriptive explanations. Thank you for making your videos.

In my experience, a couple Gin and Tonics can greatly reduce "reluctance". 🤣

Research Ed Leedskalin the creator of Coral Gate later renamed Coral Castle he created a magnetic holder,. It's an electro magnet that continues holding after you remove power to it.

So cool I love all the different things you do. You have my dream job if I could also practice music too

This is used in magnetic door holders that hold doors open, basically two halves of a horseshoe shape with a cylinder shaped magnet with N on one side of the cylinder and S on the other (not N at one end and S on the other), placed in the middle. In one orientation the horseshoe halves become N and S and can hold a door open, but rotate the cylinder 90 degrees and they lose their magnetism and the door closes.

I also love that you put challenge the argument not the person in the guidelines! I say that same thing a lot I say the issue instead of argument but same thing. If everyone did this the world would be a better place😊

Now, the permanent-electromagnetic chuck- This is a thing that's been kicking around in my head for a bit (good to know it actually works/exists... i guess that's how many electric door locks work, huh?) Depending upon how Strong your electromagnet needs to be to reroute the magnetic flux (which I have been unable to determine by searching and asking) it seems like you could make a motionless alternator to cause a coil to generate, by containing and reinforcing very strong permanent magnets on either side. So instead of having to pay the energetic cost of moving large magnets, you could perhaps, use a small amount of electricity to "wobble" the flux of the more powerful magnets back and forth across a large coil. It seems like a place where we may be able to hack physics to our advantage. So instead of building a large wind turbine, say, make a small manageable one, and apply That to wobbling the flux of big magnets around a big coil. I have yet to figure out quite how to create this to test it. But at least I know what the thing is called now so maybe I can find an answer and not reinvent the wheel, as it were.

Thanks, best explanation I've heard.

This is really really neat! Thanks for sharing this.

Such a cool demonstration!

I just love magnetics...and your videos! =)

Awesome! thanks for the demo Robert :)

magnets have another property, in that if you heat them, the magnetism disappears at a certain temperature, I recently picked up a couple of professional soldering irons that use this principle, and the soldering tips contain magnets, when cold these magnets attract the connector inside the soldering iron, and this makes the circuit and heats the tip, when the tip reaches its operating temperature, the magnet gets demagnetised and the circuit breaks, of course the tip starts cooling, so the magnet becomes magnetic again and makes the connection to reheat, this ensures a steady temperature at the tip, controlled by the magnets, I would imagine different temperature tips are controlled by the material of the magnet and what temperature it demagnetises. its called the magnastat and uses the curie effect?

Old iron, steel and alnico magnets needed keepers because they were unstable and demagnetized easily, but modern magnets do not need them as they are much more permanent. Those "keepers" may have been used on those rare earth magnets to keep them from sticking to everything else and wreaking havoc with the postal equipment while they were being mailed. They would not be needed to maintain flux as rare earth magnets are quite stable.

That's a really interesting little gadget. Thanks for sharing.

Since it takes less force to slide the magnets than to pull/push the magnets apart/together(depending if we have north north facing each other, or north south facing each other), than we figured out how to use the force of the push/pull direction of the magnet itself to slide the magnet switch into the opposite position and then back again, etc..., than could it be possible to get perpetual motion? You admitted it takes less force, and that means there is more force available. That is one of the problems of trying to invent a pure permanent magnet motor, permanent magnets don't shut off. So the motors we use today that actually work, are made with coils and use electricity to be able to in essence have a magnet that shuts off and back on again thru the cycle at the right time and position, creating constant motion.

That's really cool. Thanks Robert

Brilliant, would love to see this implemented using a large heavy wheel to turn the magnet on and off ...and to repel and turn keep pushing it....get me?.....just thinking aloud..,

By turning on and off wouldn't it be like cutting flux lines? If so, wouldn't it generates electricity? If so, then it would be like a motor.

Magnetic chucks loosing power reminded me of a tale an old boss told of working in a machine shop during WW2, if the lights went out during an air raid you automatically ducked because you knew things would start flying from the surface grinders mag chucks.

Thank you, your best video ever!

ok weirdly i wonder if this sideways motion explains why gravity is so weak if its a spiral form of attraction, then up and down on the scale thanks to rotation would actually be sideways for its force the path of least reluctance is mostly inside the crust or even the magma layer

👍🏻 Fascinating - thank you! Just curious about what to do in order to preserve the strength of permanent magnets when not in use, and what to avoid?

Gostei muito da sua aula. Adoraria se o Sr pudesse ensinar como é fabricado as mesas de irmãs permanentes usadas em retíficas planas. Muito obrigado.

One thing I've always wondered about this property is how it would work in a gear in terms of torque. I'd imagine it would be pretty great for static torque, but how would this translate in dynamic torque if it were always locking in place after it moves to the next "tooth"? I mean surely it would have to pull pretty well, right? Might need a clever mechanism to make sure it doesn't suddenly lose it between each transition to the next tooth, or maybe use something before the load to ensure it's smoothed out by synchronising with the stronger coupling. It's especially interesting when you think about applications that only really need the static torque, like say a new type of vehicle that uses a scissor lift on it's side that shoots several metres ahead with no friction and only needs to latch into the ground when it's extended as opposed to constantly applying friction to the ground, or drone that finds a nice windy place up in a tree or something to sit and become it's own generator by becoming a turbine, or a gripper that just needs to say latch on to a pan in the kitchen

I can see this making a very nice lathe face plate with a few tweaks.

The object on the counter that's behind you on the left side of the screen caught my attention. I was curious of what that object is and does

Believe in me that Just this morning i was thinking of this tool and on-off magnetism system 😂😂

Sounds like a possible motor design that would have low input high output

glorious magnetics

Use a ups if you're doing a electromagnetic chuck with alarms or just do this 👍

- and as well as a switching magnet we have presented the basis of a "new class" of DIY magnetic rotors for axial flux generators / motors..

i own a ripping hammer just like yours, less wear, lovely tool

Great visuals on explaining how that works! Hey, could you use this to create an induction heater? Just wondering if you linked this to a windmill if it could heat a sand battery better than friction. Seeing some advantages here... 🤔

the hyphenated name throws people off. you're not an idiot at all!

i saw this used as a clutch. the channel is "Gear down for what"

Are you familiar with polymagnets by Correlated Magnetics? Basically custom-designed or "programmable" magnets.

I've got a device that uses those principles., sliding to move the command shuttle, and pulling the magnets on the rocker to drive the heavy flywheel. My challenge was to make magnets switchable without using elec. I want to replace the chain and sprocket on a bicycle with this magnet manipulated transmission thingie

NASA used Radus boots on early space missions. Polarity of magnets would switch with current and allow the boots to lift off. I think they forgot and left them on the moon.

If the force needed to throw the switch is less than the force generated by the magnets when “on”, that would seem to be creating new energy from nothing. Imagine a train of these switches, the output of each throws the switch of a larger, more powerful switch, down the line. It SEEMS like you could use that setup to lift a freight train engine with the flick of your pinky! That CAN’T be right.

Lifting 800lb's parts with a magnet today. Magnet has a top safe limit of 1 ton.

I've been wondering about this since around the year 2000 if this can make for a magnetic-powered motor... the strong force being able to alternatively switch off/on the weak force so that there would be a continuous wheel rotation (no hindering gaps).

What do you think of using HUGE solar Stirling engines along the central spine of an O’Neill cylinder to generate Both Light and Power? You used graphene in one of your videos as a reflector. Could it also act as a solar panel, besides reflecting the light to a more central point to generate steam? There’s a solar concentrator power plant in California, but I was wondering if instead of just flat panels, could they have used Fresnel lenses and graphene mirrors/panels to more efficiently concentrate light along a longer heat collecting shaft? Does it make sense to cool those mirrors and preheat water? Besides warming an entire O’Neill cylinder (that’s a huge volume) would that also create weather in the cylinder and could you tweak it just using mirrors? Would it be better to use sodium as a medium to superheat water, like the concentrator plant in California- just have them completely line the central spine. - wouldn’t that pose problems for anyone trying to go through the Iris? I’ve seen other O’Neill cylinder designs that essentially would divide it into three island strips, with 3 equal windowed strips along the side. - I don’t know how you would get even graphene windows to hold up on that, even if you used a honey comb design. Especially if you wanted to have lakes, rivers, so on and so forth.

Rotor using bolts. kind of looks like a Halbach Array PM

Yeah yeah let’s get to the moonshine video… 😊

Noted

I have been meaning to ask, where do you buy your magnets? I can't seem to find a reliable/trustworthy seller. OH, awesome videos please please keep up the good work.

Robert, why can't this principle be used to prevent the magnetic lock up of a permanent magnetic motor, similar to what the parendev motor supposedly tried to achieve?

Fun 👍🏽

wow

Possible over unity device? Even though it's impossible 😉

You really should be knighted, still have to wrap my head about this

If this can be done incrementally, it would explain how computer software can control the resistance of the 'magnetic resistance unit' on my cycling excersizer. Cheers

Looking for something to work with robot and magnet. Like walking up the wall.

/// SO NOW YOU CAN BUILD AN MAGNETIG MOTOR !!! DO IT !!! //// THANK YOU !!!

I am Magneto. My local store ran out of Magnety Flakes. Can I borrow some of yours?

We need to make permanent magnet motors using this effect.

i seeing a new type of magnetic lock

By the way, if you are newer to 3d printing, be careful hammering those nuts in - its very easy to crack it, so you need a good infill.

Wery cool. :)

0:52 are you sure? is there anyway you can show proof? please and thank you.

I wonder if we could exploit this to build low power 'muscles' or actuators for robots. Does anyone know if that's been done?

How much weight can one of those units hold when assembled?

Rob, do you ever get exhausted reading through the comments? this is wild

Subscribe!! Going to making it right now!

magnetism is electricity so all you're doing is making a circuit.

could you please try and make tetrateanite at home according to that recipe? It would be highly entertaining. do the domains align automatically? How does tetrateanite obtain its magneic property? I still wish to have a floating levitating AC generator using magnes to keep the rotor afloat and spinning as I've mentioned. I find it very interesting how one would separate the fields stabilizing and keeping the rotor floating and spinning, and the field from the N/S N/S magnets arranged on this rotor (two separate fields with two separate roles in the same device) for generating AC in the coil? I was thinking of making a crude one with styrafoam but I just can't get my hands on magnets. I'm just SO curious about tetrateanite. Bizmuth is also so pretty.