Drilling square holes: Curves and solids of constant width | Hacker News

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		Drilling square holes: Curves and solids of constant width (alexbellos.com)
		2 points by RiderOfGiraffes on Nov 24, 2010 \| hide \| past \| favorite \| 2 comments

iwr on Nov 24, 2010 [–]

Are you aware of these square-hole adaptors being sold with standard drilling kits?

RiderOfGiraffes on Nov 24, 2010 | [–]

I personally have never seen one, and don't know where to buy one. I don't even know if they're common, or individually hand-made.

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