WATCH: turn smartphones into 3D hologram projectors

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Mrwhosetheboss made a down-and-dirty holographic projector for a smartphone using a plastic jewel case and special video files. Try it yourself! Read the rest

WATCH: 8 great DIY smartphone photography tips

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Cooperative of Photography released a great video with 8 DIY tips to improve your smartphone shots, ranging from super-simple and cheap to fairly simple and maybe cheap. Read the rest

Tortilla laser-etched into a record that actually plays!

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Enjoy the edible lo-fi sounds of "Jarabe Tapatío," aka "The Mexican Hat Dance." Over at Instructables, learn how to make your own tortilla record! Read the rest

Video: HOWTO put a Rubik's Cube in a bottle

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YouTuber Mathologer shares his technique for reassembling a Rubik's Cube inside a glass container. The secret? Magnets! Read the rest

Glow-in-the-dark patterns burned into electrocuted wood

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Imgur user PapJ06 created these interesting Lichtenberg figures by electrocuting wood blocks with a modified microwave transformer, then applying glowing powder and resin. Read the rest

Encrypting your laptop demystified

On The Intercept, Micah Lee follows up on his great primer on NSA-proof passwords with a soup-to-nuts tutorial on encrypting your laptop. Read the rest

WATCH: make light cubes and other cool stuff with tiny LED filaments

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Mike Harrison has been experimenting with tiny flexible LED filaments found in LED bulbs that mimic incandescent bulbs. He came up with this cool light cube and a very bright clock display. Read the rest

WATCH: Matchstick rockets in super slo-mo

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The Slow Mo Guys did a King of Random crossover episode, launching Grant's matchstick rockets recorded on their Phantom. Read the rest

Why violin makers adopted the f-shaped hole

Why did violins slowly develop f-shaped sound-holes? Because it makes them more acoustically powerful than their ancestors, which had holes shaped liked a circle -- as a team of MIT scientists recently concluded.

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HOWTO: Make glue-gun sticks out of sugar for building gingerbread houses

All Thumbs has devised a method for molding your own sugar-based hot-glue-gun sticks that you can feed into an unused and uncontaminated gun to produce perfect gingerbread-house-building molten sugar adhesive. Read the rest

Headboard made from books

Kassandra bought the books at thrift shops and nailed them in place, double-sided taping the top pages to keep them in place. Read the rest

Mosaic Photography

John Maushammer shares his tricks for making gorgeous 100 megapixel mosaics of tiny objects.

Video: turning plastic bottles into string

Demonstration of a DIY device to turn plastic bottles into plastic string/ribbon. (Thanks, Rick "Under The Weather" Pescovitz!) Read the rest

HOWTO: Post-bureaucratic flotsam kayak

Johntonta grew weary of the meaningless modern round of office slavery, so he created a kayak made from desk-lumber, a business-suit skin, computer-wire lashings. He documented the Post-bureaucratic jetsam kayak on Instructables so you too can sail away on the careless seas. Read the rest

Make a "perpetually"-flying paper airplane

A walkalong glider is a type of model plane that's kept aloft, theoretically indefinitely, by someone walking along with it as it flies, generating rising air using a piece of cardboard, paddle, or even your body. Smithsonian Air & Space posted a template and instructions for making a simple paper walkalong glider. The plans come from a recent book by Stephen Voltz and Fritz Grobe (better known as the Mentos and Diet Coke guys) titled "How to Build a Hovercraft: Air Cannons, Magnetic Motors, and 25 Other Amazing DIY Science Projects." Read the rest

HOWTO make an intercom out of obsolete corded phones

Here's a great, simple Make project that teaches you how to make an intercom from a pair of old, corded phones, a 9V battery and a resistor. I loved walkie-talkies and intercoms when I was a kid -- the idea of setting up your own house-wide wireline intercom is super-cool, and the project is dead-simple. Read the rest

Build your own open source hardware Nest-style smart thermostat

Alan sez, "Spark.io provides instructions for making your own Nest-like 'smart' thermostat. Of course it's entirely open source, with files on github." Read the rest

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