@twixerclawford
The fact that the metal casting process you have is so precise that the pieces come out with obvious layer lines it inherited from the original 3D printed pieces is absolutely incredible!
@matttgray
7:55 YOU NEED TO CHANGE AXIS OF ROTATION — that slice is disrupting the eddy current / Lenz’s Law, and the orientation is exacerbating the issue. You're rotating the sphere around the poles, and the slice is along the equator. If you move the axis of rotation to the equator, it will allow for larger, more continuous eddy current loops to form. There’s a short titled “Can a non-magnetic material be stopped by a magnet?” by tamuphysastr that overviews this concept pretty well
@andrewwsloane9180
I really appreciated the process that you used in making the copper object. Printing out a plastic model, covering it in ceramic, and then melting out the plastic, and pouring in the melted copper. Then sand blasting the ceramic shell off in pieces.. brilliant
@glen1arthur
The copper sphere is by itself just cool to look at.
@itzmetanjim
11:01 when drilling at n rpm, put the camera to n/60 fps to make it seem like the sphere is not rotating
@deraltekaiser6361
Bro just made an ancient artifact
@Mr.Peanut1986
The quality of that casting is magnificent! Really impressive job!
@dsndicmsa7141
This thing is going to create so many conspiracy theories when it's found in 2000 years in his basement.
@hitman1048
Never seen such clean casting anywhere, Bravo
@BunkerSquirrel
The layer lines showing up in the cast is not something I was expecting. Really a testament to how effective and precise your methods are. Well done!
@castcrystal
My 11 year old son and I watched this video and got so inspired! Thank you so much for sharing all of your incredible work. He loves magnets and mechanisms and we have all the equipment to do these experiments (although on a smaller scale). Can't wait to see what you do next!
@Xenocrii
I'm a simple man. I see gravity defying things. I enjoy. I like.
@mixmeow
Using a smaller ball and thinner copper structure would allow the ball to float longer. You and the audience would be able to see the interaction better, making it more satisfying and dramatic! Then, you may even be able to spin the copper at full speed with and motor or drill and get a fully centered ball!. I’d love to see this! Not to take away from this amazing video!!
@gordonmorrow4720
I think we just witnessed a rather impressive collection of skills and imagination. Well done.
@bradleyj.fortner2203
I'm way more impressed with the copper castings than I am with the magnet.
@GlobeOculaireTechnologique
Try using a somewhat smaller spherical magnet. Something with less mass. Very cool !
@rangerBlu
The quality of your casting alone deserves a subscritption (and you'v earned mine). Well done!
@lamMeTV
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
@Dreoc
You are way smarter than the average bear! Your casting skills are extraordinary and the result was brilliant. Your idea made me think about using a pool of mercury that can be energized with a battery if I remember correctly to make it rotate. Would the magnet float above that rotating pool? Anyway, your skills and intelligence blow me away! Thx!
@Nighthawkinlight