Chinese Subs May Be Propelled Silently By Lasers

If sharks with lasers on their heads weren’t bad enough, now China is working on submarines with lasers on their butts. At least, that’s what this report in the South China Morning Post…

The Aimbot V3 Aims To Track & Terminate You

Some projects we cover are simple, while some descend into the sort of obsessive, rabbit-hole-digging-into-wonderland madness that hackers everywhere will recognize. That’s precisely where [E…

Making The Halo 2 Battle Rifle Real

We’ve just been shown a creation that definitely belongs on the list of impressive videogame replicas. This BR55 rifle built by [B Squared Mfg] not only looks exactly like its in-game Halo 2 …

Build Yourself A Little Mangonel, You Deserve One

If you’re of a certain age, you almost certainly learned about mangonels by playing Age of Empires II. Any intermediate player will tell you they are a powerful siege weapon that nevertheless…

POP! Goes The Hydrogen Howitzer

Military models are great 3D printing projects, even more so if they are somewhat functional. [Flasutie] took it a step further by engineering a 3D-printed howitzer that doesn’t just sit pret…

The World’s First Microprocessor: F-14 Central Air Data Computer

When the Grumman F-14 Tomcat first flew in 1970, it was a marvel. With its variable-sweep wing, twin tail, and sleek lines, it quickly became one of the most iconic jet fighters of the era — …

Teardown Of FGM-148 Javelin Missile’s Guidance Computer

You know it’s a good teardown when [Michel] starts off by saying to not ask him where exactly he got the guidance section of an FGM-148 Javelin from. This shoulder-launched anti-tank guided m…

The Moment A Bullet Turns Into A Flashlight, Caught On Film

[The Slo Mo Guys] caught something fascinating while filming some firearms at 82,000 frames per second: a visible emission of light immediately preceding a bullet impact. The moment it occurs is pi…

Trebuchet Sends Eggs Flying

Without any sort of restrictions on designs for trebuchets, these medieval siege weapons are known to send 90 kilogram projectiles over 300 meters. The egg-launching trebuchet contest that [AndysMa…

THOR Microwaves Drone Swarms

In recent years small drones have gone from being toys and photography tools to a deadly threat on the battlefield. Kamikaze drones have become especially prominent in the news due to their use in …

Cheap Camera Gives Clay-Pigeon’s-Eye View Of Trap Shooting

Speaking from experience, it’s always fun to build something with the specific intention of destroying it. Childhood sessions spending hours building boats from scrap wood only to take them t…

Tiny Palm-Sized Crossbow Build Is Cute And Dangerous

Crossbows were a major development in the history of weaponry. They enabled lesser-skilled soldiers to shoot arrows at great speed in a compact form-factor. You can now build your own tiny version,…

Doomba: Purifying Your Floors With Fire

If you’ve ever thought that your floor cleaning robot eating the fringe on your rug wasn’t destructive enough, [Kyle Brinkerhoff] is working on a solution — Doomba. This blazingly…

Six Shooter Swaps Powder For Popped Capacitors

Modern firearms might seem far removed from the revolvers of the Old West, but conceptually, they still operate on the same principle: exploding gunpowder. But as anyone who has put too much voltag…

Knife Throwing Machine Gets The Spin Just Right

Despite how it might appear in bad action movies, throwing a knife and making it stick in a target is no easy feat. Taking inspiration from the aforementioned movies, [Quint] and his son built a ma…

Gun Safe Made Safer With Lithium Battery Upgrade

A proper gun safe should be difficult to open, but critically, allow instant access by the authorized party.[Dr. Gerg] got a SnapSafe and discovered that, while it was quite easy to use, it would a…

Beautiful Engineering In This Laser Unit From A Tornado Jet Fighter

Those of use hailing from the UK may be quite familiar with the Royal Air Force’s Tornado fighter jet, which was designed to fight in a theoretical nuclear war, and served the country for ove…

The Fliegerfaust Roars Back To Life After 77 Years

As their prospects for victory in the Second World War became increasingly grim, the Germans developed a wide array of outlandish “Wonder Weapons” that they hoped would help turn the ti…

Building A Lightsaber And Scoring A World Record, Too

As we all know, the lightsaber is an elegant weapon, for a more civilized age. [Alex Burkan] is doing what he can to bring that technology to fruition, and even secured a Guinness World Record in t…

Kinetic Strikes Via A Consumer Grade Drone

Kinetic projectiles are a seldom-used weapon of war, consisting of heavy metal slugs dropped from a great height by aircraft. On the way down to the ground, they pick up enough speed to kill enemy …