A trefoil knot with the smallest number of segments (six).
The original is made from wood; later, also done in painted steel.
The knot is designed such that it is as "spherical" as possible,
with some segments crossing at right angles.
The beam has a triangular cross section.
The segments are connected by regular miter joints.
The path exhibits a Möbius twist of 120 degrees.
WARNING: This may not print well because of the sharp corners. We still need to do a test print.
Designed by Koos Verhoeff.