DIY

Cardboard + Smartphone = Sweet DIY Augmented Reality Goggles


Looking to get away to Paris this winter, but concerned about the cost? Worry not; for the price of a pair of lab safety goggles, a cardboard box and an HTC Magic (even better if the HTC magic comes in a large cardboard box), this DIY augmented reality headset can transport you anywhere in the world, just as long as the Google Street View team has been there first.

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Gray Matter

Gone In a Flash: Burning Diamonds With a Torch and Liquid Oxygen

Diamonds are for, well, a couple seconds


I can’t stand diamonds. No, really, they just tick me off, because nearly everything about them is a lie. Diamonds are neither rare nor intrinsically valuable nor uniquely romantic. Those are ideas invented by the diamond industry. And no, despite what the ads tell you, diamonds are not forever. They are flammable and will burn brightly with a little help from a torch. This makes perfect sense when you consider that they are made of pure carbon, which reacts with oxygen to form carbon dioxide (“reacts with oxygen” just being another way of saying “burns”).

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Green Dream

The Green Dream Gets Walls


I’m standing on top of the third floor after a very productive day of putting the Kama Eebs panels and the upper joists in place. When the panels arrived, we had just put them in piles all around my site so it was a bit of work just playing the find-and-seek game to get the proper panel to the correct wall location. But then it was just a matter of gluing and screwing the track into place, spraying foam onto both the shiplap joint and the track and tilting the panel into place. Once you have a tight fit, you screw the track and the shiplap joint together and move on to the next unit.

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Green Dream

Green Dream: The Walls Are Here!

The delivery of the first batch of walls sets off a flurry of activity

One of the most unique things about my green home is the walls: instead of a standard "stick-frame" construction, I'm using special insulated panels from a company called Kama-Eebs, which have all sorts of advantages in efficiency and heat retention.

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A Chinese DIY Submarine Made from Oil Barrels

Two years, $4,385, and some homemade ingenuity can get you this underwater ride

Chinese locals have already demonstrated a knack for knocking together homemade flying contraptions and robots. Now one amateur inventor has created a full-fledged submarine built primarily from discarded oil barrels and tools bought at a second-hand market.

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Green Dream

Welding, Part One: Gear Selection


My welding hobby started shortly after I got a bid for a steel staircase. As with everything, the money always causes me to do the Carnett calculation:

  • How much is the equipment?
  • How much is the material?
  • How much did that guy say he wanted?
  • How much can I save?

Then I run off to buy the gear.

This of course leaves out the skill to do any of these things -- but the Carnett calculation includes the discovery phase, where I make all my mistakes, ask just about anyone for help, and somehow come out on the other side a more skilled operator. And 50 percent of the time, I really do save money.

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You Built What?!

You Built What!? Lrry, A Fire Breathing Robo-Beast

Meet Lrry, a part-equine, part-reptile fire-breathing monster

Slow Ride: “Lrry has no brakes,” says builder Lyle Rowell. “Nor do I.”  Elle Dunn
Don’t call Lyle Rowell’s giant fire-breathing robot a dog. The artist, who lives in Rimini, Italy, insists that his 1,900-pound creation, Lrry (pronounced “Larry”), is actually a cloven-hooved, two-legged, half-donkey, half-raptor-type-reptile.

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Green Dream

White-Out at Sixty-Five Miles Per Hour

Carnett has an automotive setback

My primary means of getting around town is a 1979 Land Rover that has been fitted out with a 2005 300 TDI engine. You may have seen me walking this morning with my head down. Yes, I walked 30 minutes for a cup of coffee. I enjoy walking, but it is hard to build a house without a truck.

My Land Rover doesn't have one temp gauge; it has two. I look at both and compare them and wonder why one is higher. None of the gauges are correct, so it really matters very little. That was till yesterday, when I found myself at 65 mph with my head out the window, the cabin filled with white smoke, and a serious panic on. I managed to find the shoulder, and bailed out, thinking the rig was on fire.

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Möbius Strip Music Box Brings Non-Orientable Topology to the Trinket World


The brain-melting concept of the Möbius strip has been used to explain complex, meaningful ideas such as time travel. But this simple, trivial music box, which uses a punch strip in the shape of a Möbius strip, might be my favorite application of the idea.

The music box will play the song once through, then plays it again upside-down, creating an endless, repeating loop of music. It may not solve the secrets of the universe--but hey--it looks so cool. Can you recognize the upside-down-and-backwards tune?

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Green Dream

Green Dream: Fun With Tons of Steel!

The build gets interesting when thousands of pounds of structural steel arrive

With the first-floor walls poured, it's time to erect the structure for the rest of the house before my panels show up. Does this look a little overbuilt? Well, there's a very good reason why folks don't build flat-roofed houses in the Great White North: It's called snow, and it's heavy. It makes little sense to design a house that would allow snow to sit on the roof, stressing the structure, instead of just sliding off.

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November 2009: Astronaut 3.0

Inside NASA's astronaut bootcamp and the grueling new training regimen for deep space. Plus, ten young geniuses shaking up science today, one writer's quest to analyze every man-made chemical in her body and more.

Check out the issue's full contents online here

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