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The Magic Cafe Forum Index » » The workshop » » The real squared circle (0 Likes) Printer Friendly Version

Chance
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Some of you techies should get a kick out of this...

http://www.wimp.com/squareholes/
MuleePete
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Very interesting, especialy inthe slow motion.

Thank you for sharing.

Pete
Ray Tupper.
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When I saw this I thought it would just be like a morticer.
That though is ingenious!
Ray.
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rudy-ray
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Dang, that's so cool!!
abrell
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This special tooll that drills square holes was invented by Harry James Watt in 1914. The US patent number is 1241175. The special curve of the tool is called a rouleaux triangle.
Bill Hegbli
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Who every said you cannot put a square peg in a round hole. That is so cool!
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magic patagonia
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Wow...magic is everywere...
wandmgc8
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Shop magic indeed! Thanks for sharing that. The off-set rotation of the bit is a little scary-looking though. I may try to get one.
ldl1017
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Saw Roy Underhill do this in his woodwrights shop using hand tools. He did it in wood, but the concepts were identical.
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curtgunz
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Quote:
On 2011-10-04 12:23, abrell wrote:
This special tooll that drills square holes was invented by Harry James Watt in 1914. The US patent number is 1241175. The special curve of the tool is called a rouleaux triangle.


That is great Abrell. Usually people tell you that "The 'Disappearing Grain of Dust' was first discussed in Genii Issue 479 page 124. It was first performed by Jack Perkinson at Magic Bill's on Coney Island back in 1928."

I've never known anyone who could to that with shop tools. Smile

You sir, are a true connoisseur.
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thegreatnippulini
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That is a standard mortising process geared down for metals. You can get a cheap wood working version at HF, but forget trying to use it on metals. Interesting note: usually the mortise bit is run under a jet of coolant to keep it from overheating. Square peg in a round hole indeed!
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