The Borromean rings consist of three rings with the property that no two of the rings are linked, even though all three rings together cannot come apart.

Print all together or a ring at a time with assembly while the third ring is printing. The hexagonal model can print in one piece with no support or raft!

For more mathematical information and to see OpenSCAD code for each model, see these MakerHome links:
Day 178
Day 179
Day 180
Day 181

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