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For a real spinning top over engineered https://youtu.be/QLTsxXNekVE?si=S31kpZQHiYlUSedx
By observationist 2026-01-2817:181 reply It's fascinating that you can get to the level of atomic material properties as a spinning top hacker. Diamond seems like it'd be the obvious winner, if you could somehow get a perfectly polished and smooth surface.
I'd love to see a small Prince Rupert's drop for a tip and a ruby/sapphire spinning surface - you'd need to make a ton of drops, probably, but having a round, nearly spherical contact geometry and super smooth surface seems like a winning combo.
By jacquesm 2026-01-292:20 Until it wears just a smidgen and explodes violently!
By direwolf20 2026-01-2915:59 Link with spyware removed: https://youtu.be/QLTsxXNekVE
By chankstein38 2026-01-2817:03 Thank you! This is what I really wanted!
By anfractuosity 2026-01-2821:56 Thanks! I came across http://www.pocketwatchrepair.com/how-to/jewels.php recently, hadn't realised the jewels weren't for aesthetics.
By mariocesar 2026-01-2817:082 reply There is a Japanese show that made a Scientist vs Engineers version to build the best Spinning Top: https://www.youtube.com/watch?v=-q-hcidtjiM
Awesome!
By chankstein38 2026-01-2816:321 reply I saw this and, while interesting and impressive, this isn't really a spinning top. It's a gyroscope. I was hoping for a real like "I cast metal into the perfect shape that I physically derived somehow to last as long as possible" or something similar not just "I put a motor in a case and it spins"
By janez2 2026-01-2917:16 your link has a "si=..." tracking parameter
