Thingiverse
Spinning tops
von ronss
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Makes
This tops can spin between 30-45 seconds
Adding dimples on this tops create a thin turbulent boundary layer of air that clings to the tops's surface. This allows the smoothly flowing air to follow the tops's surface a little farther around the back side of the tops, thereby increasing spinning time.
Not for commercial use!
Adding dimples on this tops create a thin turbulent boundary layer of air that clings to the tops's surface. This allows the smoothly flowing air to follow the tops's surface a little farther around the back side of the tops, thereby increasing spinning time.
Not for commercial use!
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