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Other Crafts A place to share your creative side: artwork, photos, crafts, or whatever tickles your fancy!

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Old 06-24-2012, 05:15 AM   #1
El Turco
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Default Drilling square holes

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Old 06-24-2012, 07:31 AM   #2
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I remember a book from Martin Gardner in the 70s had a chapter about it

a chart says more than 1000 words

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Old 06-24-2012, 05:23 PM   #3
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Looks like a cylinder in a Wankel Engine.

OK. The patent for the drill bits predates Wankel.


It appears there are other Reuleaux polygons. http://en.wikipedia.org/wiki/Reuleaux_triangle

“The price of freedom is the willingness to do sudden battle anywhere, any time and with utter recklessness.”
― Robert A. Heinlein, The Puppet Masters
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Old 06-24-2012, 05:47 PM   #4
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Mesmorizing! As you can see I require very little to be entertained...
Life is short. Break the rules. Forgive quickly.
Kiss slowly. Love truly. Laugh uncontrollably,
and never regret anything that made you smile.

Women are Angels and when someone breaks our wings we simply continue to fly...on a broomstick. We are flexible like that
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drilling, holes, square

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