@MaxamillionX72 wrote:
My trusty #201 1/4" endmill has done a lot of wood cutting, and is starting to show it’s age. How do you know when an endmill has reached it’s useful life? The edges still feel sharp, no perceptible nicks, but it’s changed colour from heat.
Time to retire the old girl and bring in my spare? Or is the carbon build up having an effect on the cutting ability and if so, how to clean it?
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