The Trefoil Knot is a 3D curve totally drawn on a torus' surface. Part of the toroidal knots family, it is defined by the following parametric equations:
These cufflinks were modelled by twisting a square profile around a curve defined by the equations above. The shaft is composed of three curved square beams that make contact with the three middle points of the Knot.
A beautiful mathematic set of cufflinks inspired by ones that I have and that were crafted by an expert artisan in Taxco, Mexico (home of expert jewellers and silversmiths). The difference is that those are composed by three intertwined rings while these are defined by a parametric equation.
A couple of curious facts about these: