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Posted on Relief holes when using large forstner bit?

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Richard

11310 posts in 4116 days


#1 posted 02-04-2014 03:25 AM

There is NO Problem using a Relief Hole! I use them when I’m drilling an hole with a Hole saw. Should be NO Problem for a Forstner Bit. It certainly won’t “Make It Angry” ...LOL..

The reason mine USE TO Smoke all the time was just that the Cut Sawdust had no where to go. Some Diagrams below of relief hole.

The Circle Cutter that Candy’s Article is about is a Cheap Piece of Junk from Harbor Freight. About $6.00 Bucks I think. (Pic Below) They didn’t mention that!

I have one from Lee Valley ($32.90) It works just Fine. MAX RPM Of 500/550! Faster than that and you’re asking for Trouble! Also Pictured Below.

It also cuts an “Inside” or “outside’ Cut.

Hope it’s of some help.

Rick


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-- Richard (Ontario, CANADA)


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