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2,035 Posts
These 'Kinetic' rings are fascinating:
http://www.youtube.com/watch?v=La92Dfy4aD4
http://www.youtube.com/watch?v=LUpNvOERKFU
Aren't some people clever...
Edited by: allan40alt
http://www.youtube.com/watch?v=La92Dfy4aD4
http://www.youtube.com/watch?v=LUpNvOERKFU
Aren't some people clever...
Edited by: allan40alt