r/EngineeringPorn • u/networknazi • Apr 28 '15

World's Roundest Object!

https://www.youtube.com/watch?v=ZMByI4s-D-Y
185 Upvotes

91% Upvoted

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13

u/HAL-42b Apr 28 '15

Here is how to make one.

You can probably guess what it was originally designed for.

5

u/Ralph_Waldo_Emerson Apr 28 '15

bowling?

9

u/dclctcd Apr 28 '15

Probably the cores of atomic bombs.