I have created designs in the SCAD language for a number of objects, including

  • Six twists and a cross, a three-dimensional puzzle.
  • Sixpack, a set of three variations on a classical puzzle.
  • Borromean rings, a simple representation of this classic linkage.
  • Conway's Century Puzzle, a pocket version of this puzzle.

    See also the designs for simple knots in Knots and their symmetries.

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