money

Cast Your Own Stamps to Put Harriet Tubman on the Bill

Cast Your Own Stamps to Put Harriet Tubman on the $20 Bill

By Caleb Kraft

Caleb Kraft

I get ridiculously excited seeing people make things. I just want to revel in the creativity I see in makers. My favorite thing in the world is sharing a maker's story. find me at CalebKraft.com

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Put a new face on your money with these custom stamps. Don’t worry, it’s not illegal so long as you don’t make the money unusable.

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Photo of Gyroman.

3D Printed Toy Uses 104 Pennies to Walk

By Donald Bell

Donald Bell

I make stuff, play music, and sometimes make stuff that plays music. Fan of donuts, Arduino, BEAM robotics, skateboarding, Buckminster Fuller, and blinking lights.

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This 3D-printed toy uses a flywheel filled with pennies to walk like nothing you’ve seen before. The open-source 3D printed toy revisits a gyroscope design that was shelved by Mattel in the 80s.

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How-To: Recover Gold from Old Electronics

How-To: Recover Gold from Old Electronics

By Andrew Salomone

Andrew Salomone

Artist, writer, and teacher who makes work about popular culture, technology, and traditional craft processes. http://www.andrewsalomone.com

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For the modern-day prospector the gold isn’t in them thar hills anymore, but it is in them thar flip phones, as this illuminating tutorial from Josehf Lloyd Murchison on recovering gold from old electronics demonstrates.

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Math Monday: Make a Ball of Money

Math Monday: Make a Ball of Money

By Gareth Branwyn

Gareth Branwyn

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.

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The diameters of US quarters and pennies are very close to the ratio needed to make a truncated icosahedron, i.e., a soccer ball in the US or a football elsewhere. Copper pennies take the place of the usually black pentagons and quarters take the place of the usually white hexagons, so even the colors work out.

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