Tetraknot Pendant

Four Trefoil knots are tangled together in a symmetric way. This model has the same geometry as Four Tangled Triangles, only it uses Trefoil knots instead of equilateral triangles. Although it does not appear so, the knots slightly overlap and will print as a single object.

The name comes from Bjarne Jespersen, who creates beautiful wood carvings of these objects. He calls this model a "Concentric Tetraknot". It is described in his book Woodcarving Magic.