Dr. Jeannine Mosely finishes building a level-3 Menger sponge from business cards. You can also build your own, though Dr. Mosely warns, "[a] level 4 sponge would require almost a million cards and weigh over a ton. I do not believe it could support its own weight — so a level 3 is the biggest sponge we can hope to build." (related)
posted by Blazecock Pileon on Feb 2, 2007 - 19 comments

Mengermania tracks the progress of building a level four Menger sponge out of index cards (related - level three with business cards). [via]
posted by tellurian on Jan 18, 2007 - 5 comments

Business Card Menger Sponge Project
The primary goal of the Business Card Menger Sponge Project is to build a depth 3 approximation to Menger's Sponge ... out of 66,048 business cards . This can be done by building 8000 business card cubes out of 6 cards each, linking them together and using the additional cards to panel the 18,048 exterior faces of the sponge.

With all the troubles in our world today, the confusion of the Presidential primaries, terrorism, you name it, it is good someone can find a project that gets people involved and serves, after its completion, as a greatly beneficial offering for mankind.
posted by RubberHen on Jan 29, 2004 - 4 comments