I love that you keep all the "repetitive" dialogue in the video. Makes brain feel good. The ceremic slurry, FUSED sillica sand, vitrify the shells, melt out the plastic etc. etc. My personal favorite are the Petrobond videos where you compact the sand and cut out a path for the metal to flow into
That's all kinds of cool, well done! Ideas: 1) Suspend the magnet in the middle of the sphere, then spin the outer sphere up with the drill before releasing it. Might get more levitation that way. 2) With the entire system spinning, hook up a voltmeter to the outer sphere and see what kind of voltage it generates. 3) Consume cookies.
Actually as it is have many holes , this really reduce eddy cuurent as resistance gets larger in the sphere thing and so the the magnet can not have the suspension force like in a solid cylinder so i think this is the most you can get out of it Also the split between the 2 Half's of the sphere reduce eddy current and increase resistivity as there is a layer of air between them ( even if they are touching it is higher resistant that the copper it self ) But awesome design non the less
A three-piece spherical design might provide more consistent repulsion on the magnet as it spins. Think of a solid equatorial band with two "holey" pole pieces. The band would provide a seamless, continuous body for eddy currents to form unimpeded (as well as providing some horizontal auto-centering capability), while the poles would allow visibility to the magnet inside. Should be easier to tune the speed and eliminate the clunking. All-in-all, an extremely beautiful piece. Bravo!
Hide any motor and choose a mass require minimum rotation speed. Add multiple spot lights focusing the inside piece n minimize glare. U definitely got a magnificent art piece. 🌈
Kinda cool when a channel I've been following out of interest in metal casting commits to building an experiment that attempts to demonstrate a physics principal.
I bet a golf ball/baseball size solid copper shell with a neodymium magnet inside would make a fantastic ‘mystery object’ to keep on a coffee table. Anyone that picked it up would feel how odd it moves, and spend minutes manipulating and trying to guess what it is/what is inside.
I'd be interested in seeing a thermal camera shot of it in action. Eddy currents have to have a thermal effect over time, and while it's possible that the spinning copper spheroid is able to dissipate most of it, a decent thermal camera should be able to pick something up.
Put second magnet under a table just below the first setup, then set the second magnet up on a motor to spin. Maybe that will spin the first magnet fast enough to have it levitate and look kind of magical?
electroplating a conductive surface of a 3d print with copper is also an option (conductive surface + graphite electrode). that construct can be used to make a dynamic maglev bearing. yep also magnetic gears.
Before really thinking about how you'd execute this I imagined the magnet being inside the copper sphere while it was being cast so it would be trapped in there. Dumb on several counts I realise - the nature of the casting process first of all, and at a certain point heat kills magnets - you wouldn't want to risk that with what I assume is rather expensive magnet.
This particular polyhedra makes it hard to see through when spinning as there are no continuous faces arranged in a great circle. So I was trying to think of a good polyhedra that looks both spherical and possesses faces in a great circle and and realized: why not just use a sphere with windows in it? A whiffleball cutout would be perfect, and we'd be able to see in well when spinning, and you'd probably get better results with the magnet as well.
it might be easier to see what's happening if the magnet were glow-in-the-dark and you filmed in low light. or maybe even just painted white with a black copper sphere for better contrast
very cool project. maybe have a light underneath close to the sphere and focused to shine only inside the sphere. Obviously a motor with speed controller would allow you to pick the perfect speed though that might change with temperature/etc.
You need consistent copper material around the centerline of rotarion for the magnet on the up down axis the hexagons are pushing it left and right constantly
Thank you for these videos, your magnet stuff is breaking my brain. I'd love to see the electricity being generated by these various actions somehow. Your sphere in 2 piece with something keeping them from touching might show voltage between the 2. That liquid effect has to be pretty much directly related to energy produced I would think? If it were balanced it likely wouldn't produce any energy but I think you are highlighting something interesting here
Might try a smaller magnet (gut feeling) it might suspend better without being affected by centrifugal force. If you made the ends of the stand a little closer together kand stronger), it would help hold the halves together and the plugs in place...might have to use some thrust bearings.
Other than the copper and neo effect, not sure why this device is made - as it needs to spin, creating the effect. Why not just put in other magnets that oppose the inside neo, then no matter what x, y, z1, or z2 axis the outer structure rotates, the inside and floating neo will retain its internal floating.
I really appreciate your posting of links to your tools, but i would like to know what brand of belt grinder you are using. its not a huge deal, but i would like to know.
Could you blow air underneath the magnet to create a Magness effect while holding the cage still if it works you would be able to see the floating of the Magnet
The entire premise posed 36 seconds in didn't make any sense. Hollow tube, cylinder magnet clearly shows it applies a braking force to slow down existing movement, not levitation. So why would changing anything about the shapes here suddenly induce levitation?
