Topology Joke - Doughnut/Mug Ring

Colour change achieved with a simple filament swap after the top layer of the ring, otherwise recommend minimal layer height (small nozzle probably also helpful, though photos show results with a standard 0.4mm nozzle).

I made a ‘ring’ stand piece and merged the original models with it, to allow for easier display of the entire sequence (either on a tabletop surface or hanging, as an ornament).