In the soft glow of the operating room at Rambam Medical Center in Haifa, Israel, Dr. Michael Mimouni locked in a moment of suspense that would be remembered for a lot longer than the time he spent in that room. October was rolling into November in 2025, and on the 29th, his team accomplished something incredible: the world’s first transplant of a fully 3D-printed corneal implant manufactured from actual living human cells.
YouTuber ‘Nate from the Internet’ has great memories of a 1984 LEGO kit called King’s Castle, which was usually an afternoon’s worth of clashing knights and crumbling walls when he was a kid. Years later, he had a desire to return to that childhood toy, but his plan was to take it to a whole new level, such that playtime became a construction project in and of itself. To accomplish this, he used a 3D printer to reproduce the complete set at 20 times its original size, block by block and turret by turret.
Maker RCLifeOn came up with a crazy idea one day: why not remove the board from that hydrofoil setup and replace it with something with pedals and gears? The result is a contraption that promises to glide over the water on plastic and wood wings, driven solely by the rider’s own two legs and the gentle hum of an electric engine. Months of scribbling down ideas and late-night printing sessions later, that concept finally hit the water for the first time.
Photo credit: OSU
In the Oregon State University lab, a group of researchers have found a solution to one of the construction industry’s longest-running problems. For years, Devin Roach and his team have been fine-tuning a pretty basic combination of dirt to come up with a material that can be printed into walls right on the spot and stand up on its own without any waiting around. The result is a mix of soil, hemp fibers, sand, and biochar that comes out of a 3D printer’s nozzle and sets almost as fast as the layer touches the air.
Hot dogs have always been about simplicity. Slap one on a bun, add some ketchup / mustard / relish, and you’re ready for a quick bite. But Joel Creates took that concept and wired it for actual electricity. His most recent creation transforms the basic frankfurter into its own heat source, all housed in a device tiny enough to fit in your jacket pocket.
Danny Lum spent more than a year attempting to make a completely insane idea into reality. He had an idea for a mini bowling lane that he could simply set up on his kitchen table, with just as many features as the real thing, including pins that arranged themselves after each roll. What began as a peaceful little side project during those long evenings at home quickly grew into something far larger than he had anticipated.
Luke Maximo Bell and his father Mike spent months in a makeshift workshop building a drone that would rewrite the rules of airspeed. On June 22, 2025, the Peregreen 3 crossed the 360.4 mph barrier in Dubai’s Al Qudra desert, setting a new Guinness World Record for the fastest battery-powered remote controlled quadcopter. Outpacing the previous year’s milestone of 347 established by a Swiss team, it was a hard-fought victory that required seven crashes and a run of devastating setbacks to secure.
Matt Denton, a legend when it comes to transforming tiny models into full-size sit-ins, has spent years making the unthinkable a reality. His new creation, a monstrous version of the 1981 LEGO Technic Dune Buggy (8845), is no exception. What began as a simple kit of 174 plastic parts has been expanded to accommodate a large adult behind the wheel.
Toast, a YouTuber who turns crazy ideas into real gadgets, decided to master one of the most complex machines in music. He wanted a piano that could be printed at home with a normal 3D printer. No strings or heavy wood frames – just layers of molten plastic that form keys, hammers and resonant tubes. The end result plays actual notes, fits on a desk and doesn’t cost much more than a few rubber bands.
A single bed on a Bambu Lab 3D printer whirs away for hours, layer by layer, building up a strong PLA filament mat, strand by strand. When the platform has cooled down, the interlocking rings lift loose, revealing a flexible mat of plastic chainmail ready to be draped over a test dummy. The guys over at Screen Tested wanted to know if you could genuinely make decent armor on one of these fancy home 3D printers – could it resist real-world violence?