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Playing card constructions

By George Hart for the Museum of Mathematics

At The Math Museum, we think it’s important to challenge oneself with mind-expanding tasks. Here are two rather challenging constructions which look simple, but may stymie you for hours. When you’re done, you’ll have something unique to show your friends. The ball at left is made of thirty cards; the one on the right uses sixty. Two decks of cards, a pencil, and a pair of scissors are all that’s necessary. Because of the tricky interlocking pattern, they hold together without tape or glue. If you want to polish your maker skills, try slicing up two decks of cards using these templates, then just slide them together.

cards_1MM.jpg

Detailed directions and mathematical background are available here. Francesco de Comite has taken this idea and gone wild with it, rendering many other possible patterns here. Most have not yet been built, so you can be the first to make them! [Editor's note: If you do, post them to the MAKE Flickr pool and post the link below!]

cards_1MM.gif

More:
Math Monday: Mathematically-correct breakfast

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.


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Comments

  1. Francesco De Comite says:

    Hi,
    one old and two new constructions :
    http://www.flickr.com/photos/fdecomite/4234355979/

  2. . Danny says:

    Interesting man. Thank you for that information.

    Best Regards
    Andrei Iftode
    Tabla tip tigla metalica
    Oferta tigla metalica