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Spinning drill bits can create square holes?

Posted Oct 20th, 2009 at 10:16 AM and seen
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A crazy new machining innovation involves using a Watts or Reuleaux drill to make a square hole. While using a spinning drill bit to produce a square cut out seems counter-intuitive, it really works. And apparently the idea for this technology has been kicking around since 1917!

See how the spinning drill bit works to create a square hole here.

By Catherine Faas.

 Catherine Faas

Comments (2)

Oct 20, 2009
Alan Howlett said...
The method is similar to a ball broach.
Oct 21, 2009
Mike Doell said...
They arent new, we had them in high school shop class 20 years ago.

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