EngineeringPorn

precision spinning top doing its thing! The contact point is a 1/8" corrundum Ruby. spin time is around 12 minutes. This one's made from bronze and titanium.

precision spinning top doing its thing! The contact point is a 1/8" corrundum Ruby. spin time is around 12 minutes. This one's made from bronze and titanium.

Video Credits to: u/Vegetable_Huge

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