Pythagorean Cup A fun and functional twist on an ancient Greek invention! This is a 3D printed Pythagorean Cup (also known as the "Greedy Cup" or "Tantalus Cup"), a clever self-emptying goblet that punishes greed — just like the original designed by Pythagoras himself.
How it works:
The cup features a hollow central column rising from the bottom, which acts as a siphon. Fill the cup normally and it holds liquid perfectly. But fill it past the critical level — and the siphon is triggered, draining the entire contents out through the stem and base. You can't cheat it!

Perfect for:

Science lovers and curious minds
Gifts and party tricks
Physics demonstrations
Collectors of historical curiosities