Awesome Machines

Removing corn kernels from the cob can be an arduous and time-consuming task. But not so for Handy Geng, who built himself a ridiculously over-engineered machine that spews out corn kernels by the hundreds after loading up its magazine. He probably should invest in a bigger basket though.

This compact desktop laser can cut wood, acrylic, leather, and other textiles, and the 10-watt model can engrave just about anything, including glass and aluminum, and cut through 5mm wood in a single pass. Its bed is large enough for objects up to 8.26″ x 7.48″, and an optional roller allows for engraving cylindrical objects.

We’ve seen how factories make full-size chain-link fencing by bending and twisting stiff wire. Now watch how it’s done on a much smaller scale. W&M Levsha created this custom machine that bends copper wire into the proper angles to make a mini fence. The weaving still needs to be done by hand though.

Watch as a solid block of copper is magically transformed into a set of linking rings with the help of talented metalsmith Viktor Leontiev and his trusty milling machine. The finished piece looks great set onto its hand-turned wooden base.

We’ve previously taken a behind-the-scenes tour of a bowling alley. This video from 3D animator Jared Owen offers a more in-depth explanation of the engineering and mechanics that go into the machine that magically straightens and resets the pins between balls.

Inspired by a mechanical drum-playing machine designed by Leonardo Da Vinci, this LEGO music maker by Giuseppe Acito uses a series of pegs placed onto a spinning wheel to trigger sound sequences as its “fingers” press keys connected to synthesizers.

Created by Tentacle Media Ltd., the Mini-Mutoscope is a 3D-printed replica of a 19th-century mechanical flipbook. The display works like an animation flipbook, only its movements are smoothly controlled by a crank. It holds up to 42 squares that you can load with your own animations, or one of the samples provided by Tentacle.

Think of how strong a steel chain can be. Then imagine the forces that must be necessary to shape and connect its links. In this video from Engineering and Architecture, we get an up-close look at a specialized machine that takes lengths of steel wire, then scores, cuts, bends, and presses the pieces together.

Saarland University researcher Marc Teyssier created the creepiest webcam we’ve ever seen. The Eyecam uses six servo motors to realistically replicate the movements of a human eyeball, eyelids, and eyebrow, staring down its subject and making sure they are paying attention during Zoom calls.

Using parts from a 3D printer, custom laser-cut components, and LED lighting RCLifeOn created this mechanical table that uses a magnet and a ball bearing to draw complex patterns in sand, only to erase everything it doodles. On the plus side, as soon as it wipes out an image, it gets to work on another.

Try to balance a bowling ball on a circular object, and you’ll almost certainly fail. But engineer Stepan Ozana shows how it’s possible to do just that with a machine. It uses a principle called LQR and REXYGEN control software to monitor the ball’s position and to rapidly move the wheel back and forth to keep the ball from falling.

Aviation enthusiast Viktor built a custom machine that can make identical copies of paramotor propellers. Area28 shared this video that shows how it works by the form of the original, much like one of those machines they use to copy keys. Skip to 6:10 for the money shot.

How It’s Made takes us inside the factory for WEGA, makers of high-end commercial espresso machines. There, industrial machines transform sheets of steel into parts, then skilled workers assemble dozens of components, including a large copper and brass boiler that sits at the center of each machine.

Skynet, er Boston Dynamics reveals another of our future robotic overlords. Stretch is a wheeled robot that uses an articulated arm and suction grabber to pick up and carry objects, reducing repetitive and back-breaking work for humans. Watch it pick up a Spot robot, then set up and operate a box handling line.

A while back, expert LEGO engineer and mathematician Alexander Holroyd created a 7-segment display that uses LEGO Technic parts to change digits. Fello LEGO fan and GBC builder Fernando recreated the intriguing machine, and shared video footage of his version in action.

Most of the marble machines we’ve seen are either powered by gravity or motors. But builder Daniel de Bruin shows us how he made a mechanism that stores up energy using a spring, carrying marbles to the top of a tiny bent-wire maze using a Ferris wheel of sorts.

It’s pretty tricky to balance a cube on one of its corners or edges. But ReM-RC shows off a really cool machine they built that does just that automatically. The system uses an ESP32 controller, an MPU-6050 gyroscope-accelerometer chip, and a set of three servo motors that spin wheels to maintain its balance.

Engineer and inventor Tim Hunkin is the man behind the beloved UK educational series The Secret Life of Machines. Each episode of his new YouTube series will dive deep with a specific component. Episode 1 teaches everything you’ve ever wanted to know about chains and belts, along with their history, physics, and varieties.

There’s something immensely satisfying about this video of the SANOVO OptiBreaker, a specialized assembly line machine which ingests over 200,000 eggs hourly, gently cracks each one, then separates the whites from the yolks. It also can wash itself automatically.

It’s nice to be able to work from home, but it’s easy to get distracted too. Sprice Machines came up with a solution – a silly Rube Goldberg contraption that’s designed to keeps him focused on the task at hand. Or is it a Productivity Killer Machine?

Engineers from MIT CSAIL have developed LaserFactory, an innovative fabrication machine that uses a modified laser cutter to create entire devices. It can cut parts, pour silver circuit traces, and place electronic components all in one system. In this video, it makes a drone, which flies straight out of the machine.

Jared Owen always does a great job explaining how things work by creating 3D animations of their inner workings. This time, he walks us through the caterpillar-tracked M1A2 Abrams tank, which weighs in at an incredible 68 tons, and can cross just about any terrain. We had no idea these things were powered by jet fuel.

To prove how fast and durable the Kennametal HPR drill bit is, the guys from Titans of CNC: Academy programmed one of their machines to drill a perfect grid of 672 holes in a block of cast iron. The tool moves at an impressive 103 inches-per-minute, drilling 1.85″ deep holes over and over again without wearing down.