At MetMo, we're always chasing the next big idea—and after Multi Drive, we went into overdrive. With too many concepts to fit into Kickstarter alone, we’re evolving how we launch: bringing smaller, limited-edition projects like the MetMo Piston straight to our store. No springs, no magnets—just pure pneumatic precision you can feel. Inspired by the infamous “Danger Knife,” Piston is a palm-sized engineering marvel that’s silent, satisfying, and seriously fun. This shift lets us move faster, stay ahead of copycats, and keep delivering the clever, quality designs you love—without compromising on current campaigns.

Ready to play with air-powered perfection?

Fidgeting isn’t just a modern-day habit—it’s a centuries-old craft. In this deep dive into the hands-on history of fidget toys, we explore how these tactile tools evolved from ancient curiosities into precision-engineered marvels. From Baoding balls to ball bearings, we uncover the ingenious designs that keep fingers busy and minds focused. At MetMo, we celebrate the fusion of engineering and play—because sometimes, the best ideas come when your hands are in motion.

We delve into the fascinating world of air bearings—components that use a thin film of pressurised gas to provide a low-friction interface between surfaces.

We delve into the evolution of the engine piston—a component that plays a pivotal role in converting energy into motion. From its early use in air-pumping systems around 150 BC to its development in steam engines during the 18th century, the piston has undergone significant transformations.