A few years back, maker Peter Brown attempted to build an axe with a handle made from gummy bears and resin. Unfortunately, it turned into a sticky mess after sanding. Now he’s back to try it again, but this time he molded his own faux gummies from resin so they’d hold up better to the process.
A vacuum engine moves due to air pressure on one side of its piston and a partial vacuum on the other. The simplest example uses a flame on one side of the piston to create these conditions. W&M Levsha shows the process of making a working miniature of this kind of engine using brass, aluminum, and precision machining techniques.
Maker Neil Paskin returned to his workshop to build another great piece of functional craft. He fabricated this vintage-style industrial chair using hand-cut and bent steel for its legs and support structure and gently curved wood for its back and seat. We love how he made his own plywood from reclaimed floorboards.
The Karakuri Channel loves to make unique mechanical art. This time, they designed and built a gadget that turns nearly 300 brass nails into a moving wave. To make it work, they removed the tip of each nail and attached a sleeve and a ball bearing. A motor turns interchangeable discs against the balls to create wave patterns. Watch with subtitles.
While best known for his paintings, Leonardo DaVinci also invented many imaginative machines. Among his ideas was a crazy weapon that could fire 16 crossbows in a row. How to Make Everything took DaVinci’s drawings and built a real-world replica of the weapon. It works surprisingly well, but loading the thing seems like a precarious process.
In this video from metalworker Koss, he shows how he created a sleek, modern dagger. He meticulously machined its tapered blade from W1-7 high-carbon steel and crafted its handle and matching sheath from hollow copper tubing. Its shape reminds us of a letter opener, but this is a serious knife. We love the bevel detailing on the ends.
Iron Man had armor that was able to fix itself after a fight. JLaservideo took a stab at making real-world armor pieces that heal themselves after being heated, thanks to Nitinol – a nickel-titanium alloy with the ability to return to a programmed shape after being bent. The material is expensive and hard to work with, but Tony Stark could afford it.
Ali Spagnola thought making her car change colors like a gigantic mood ring would be fun. So she sprayed it with thermochromic liquid crystal paint. This stuff doesn’t show if she’s happy or sad but instead reacts to changes in temperature. If you’re wondering what those discs are on her car, they’re the 9,000 PopSockets she attached in a previous video.
Emily the Engineer, proves yet again that just because something CAN be done doesn’t mean it SHOULD be. She recently got a bee in her bonnet about 3D printing a toilet. Before printing the full-size version in pieces, she made a working scale model. After she got the real deal working, she started adding a bunch of unnecessary features.
Paul Jackman has made a lot of drink coasters out of recycled pallet wood. This time, he made a bunch of coasters that look exactly like real pallets. After designing a 1:10-scale model on his computer, he got to work fabricating 200 of the tiny replicas, complete with laser-engraved logos. You can grab a 2-pack on the ISOTunes website for $50.
Despite only firing rubber bands, we would not want to be on the business end of this wooden minigun. Generic Woodworking shows off the incredible amount of blood, sweat, and tears it took to build this impressive toy weapon. It uses parts from a lawn trimmer and a belt sander to drive its mechanism, and makes an unnerving popping sound as it fires off rounds.
The S is back with another really cool looking cardboard weapon. The laser-cut blaster looks like something straight out of a sci-fi first-person shooter, and fires projectiles by igniting small bursts of butane gas stored in water bottles hidden inside its ringed cardboard cylinders.
Robinson Foundry shows how he took a digital 3D model of a human skull and used it to create a cast bronze sculpture. The Lost PLA method starts by making a 3D-print, coating it with a ceramic material, kiln-firing it to harden it and melt away the plastic, then filling it with molten metal and eventually chipping away the casting.
Burls Art has created a few guitar bodies from colored pencils. This time, he made a 5-string bass using a similar technique. Before sealing the pieces in resin, he sorted and grouped the colors and fanned them out into a bold, angular design. He also added a timer to the video to show how long it took to build.
A Bugatti Chiron costs at least $2 million. To save money, Steven Song and a team of builders made their own Bugatti using junkyard parts. They started with a busted-out Pontiac G6, then built a custom metal frame, sculpted a mesh and foam form, and covered it with Bondo. It wasn’t without setbacks, but they eventually finished the Walmart Bugatti.
We never really thought about it before, but some hammers are made with other hammers. This video from Process X takes us inside a small tool factory in Japan to see how a skilled blacksmith makes various traditional hammer heads by forging steel and shaping each one using a pneumatic power hammer and hand tools.
Peter Sripol is no stranger to making unusual aircraft. In this video, he builds and tests out three weird designs for airworthiness, including a plane with a fuselage made from springs, a propeller that works like a tank tread, and a ridiculous set of wings that resemble Venetian blinds.
Jake Carlini wanted a motorcycle but didn’t have the budget to buy a real one. Instead, he decided he’d build his own using various bits of junk and trash he found in his garage. He made its frame out of steel signposts and scrap wood and powered it with a cheap electric scooter motor from China.
Hot tubs are great, but the view you get while soaking remains static. If you want to see more of the world while you warm up, you need a hot tub boat. While you could spend thousands on one of Yacht Tubs’ professionally-built boats, David Rule shows us how it’s possible to build your own with stuff you can buy at the hardware store.
Our ability to reclaim and reuse metal means it’s possible to make knives and tools out of all kinds of stuff. Knives Project shows us how they burnt the explosive coating off a bunch of sparklers, then twisted and forged the remaining metal rods to create a uniquely patterned blade.
Quiet Nerd was looking for a way to add some warmth outdoors. Rather than buy an off-the-shelf heater or stove, he decided to build his own. He started out with four stainless steel dog bowls, which he cut and assembled to form the body of the wood-burning stove. It stands on four tall threaded rods.
Like most metals, steel is an easily recyclable material. In this video from Handyman Restoration, he shows us how he took a pile of steel nail clippers, forged them into a block which he hammered flat to form a fixed blade with a unique damascus pattern. It was interesting to see how he made the wooden handle too.
Take a look inside the Vincent Bach factory, where they handcraft premium brass instruments. In this video, you’ll see craftspeople transform stamped sheets of brass into a variety of precision trumpets for professional musicians. Along the way, you’ll learn about how a trumpet works, too.