TRIZ Innovation India

For those who sincerely think HOW to innovate

Drilling square holes !

Is it possible to drill a square hole with a rotating drill?
Seems a physical contradiction ! With a rotating bit to drill a perfect square. Dinamization is the concept.
http://www.linkedin.com/groupItem?view=&gid=2405918&type=member&item=103816959&commentID=74638736#commentID_74638736

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