Wild knots

Symmetry and gears: Six axis racks

Real-life fractal tree zoom

Slide-glide cyclides

Recursive racks

Using topology to close a rubber band bracelet

Lost in the Multiverse Library with @TomRocksMaths

The Ames room optical illusion

Real-life fractal zoom

Screw/screw gearing

Geared cube net

Knotty Analog Oscilloscope Art

Scissors NOT gate

Gear cube and Brain gear

Knots in disguise

Helix cube puzzle

Impossible triangles

Genus two holonomy

Kinetic cyclic scissors

Cannon-Thurston maps: naturally occurring space-filling curves

The pi/4 polyhedron

Why don't Rubik's cubes fall apart?

From Sphericons to Countdown dice

Grabber mechanism

Continental drift puzzle

Puzzling degrees of freedom

More circles on a sphere of cubes

Where do these circles come from?

Holonomy mazes without a maze

A better d6 than the cube?