A compact hand fan made from 8 thin 0.6 mm plates and a central core screw.

The plates come in 2 variants that alternate with each other. Each plate connects using a simple twist-lock mechanism: place the slotted plate at a 90-degree angle over the peg, then rotate it back to lock it in place. This keeps the fan blades securely connected while still allowing the fan to open and close smoothly.

The design prints in under an hour on a single plate with just 25 grams of filament.