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Posted to rec.crafts.metalworking
Ned Simmons Ned Simmons is offline
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Default End mills break when making a dog clutch

On Mon, 21 Feb 2011 09:52:32 -0600, "Pete C."
wrote:


Ned Simmons wrote:



First thing that strikes me is that the feed rate is extremely low. It
sounds like you're dulling the tool with a way too conservative DOC.


Chip load, not DOC. Agree, the tool is rubbing more than cutting and as
a result is rapidly dulling, deflecting more and more as it dulls and
eventually snaps.


Oops, I meant feed per tooth...

--
Ned Simmons