Rectangular tube version. Two great circles of fibers, together with four more circles that connect the fibers together.

This model is both the Half of a 120-cell and Half of a 600-cell together in the same space, showing how they are dual to each other.

This is a collection of common example surfaces from classes in multivariable calculus. Much larger versions of these surfaces are available here. ...

This steampunk style knotted cog was procedurally generated using 3-dimensional spherical geometry, then stereographically projected into our (most...

This was generated by Mathematica using the following code: f[u_, v_] := {u, v, u^2 - v^2}; scale = 40; radius = 0.75; numPoints = 24; gridSteps =...

This is the trefoil knot, printed out in a shape that will smoothly roll across the table!

Some people were having problems with the gears being fused together on delivery, so I've altered the model. It is now printed disassembled, and yo...

The 600-cell is one of the six regular 4-dimensional polytopes. This is the result of taking the edges of the polytope, radially projecting them on...

This is an axle for the Triple gear (full size version).

 The usual version of a Möbius strip has as its single boundary curve an unknotted loop. An unknotted loop can be deformed into a circle,...

The goal of this puzzle is to assemble the six identical "rib" pieces shown in the first picture into the cage-like structure shown in the others. ...

This is an axle for the Triple gear (full size version).

This is a larger version of Juggling Club Motion (http://shpws.me/3V5k), and is hollow, with wall thicknesses large enough to permit printing in st...