umbilic trefoil knot 1

by mattm1080
  • White

    White nylon plastic with a matte finish and slight grainy feel.

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Umbilic Torus.  A ball will roll around the three sides and return to start point.  Can be done to most knot curves with different number of sides.  PM me for a custom creation.  Animation of rolling ball at:


IN: 1.311 w x 3.433 d x 3.083 h
CM: 3.33 w x 8.72 d x 7.83 h


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