Twisted Hourglass with Ball, Impossible Print

This shape is a striking puzzle: two discs are joined by spiral ribs, and a ball is trapped between them, rolling freely but unable to escape. Everything is printed in one go, with no gluing. The photo shows several colour combinations, some with two-tone transitions.

• Material: PLA, a biodegradable plastic made from corn starch
• About 7 cm tall (around 4 cm in diameter)
• A calming object to turn in your hands
• A gift idea for curious minds, engineers and students
• Keep away from direct sun and temperatures above 50 °C

Printed on a 3D printer. See more kids' toys and figures or order a different colour.