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Talked to a retired toolmaker yesterday and he made me rethink my speeds and feeds completely
He said I'm running my HSS endmills way too fast and that I should drop my spindle speed by about 30 percent for better tool life. I've been doing it my way for 5 years, but after trying his suggestion on a stainless job today the finish came out way smoother. Anyone else get advice from an old timer that flipped your whole approach?
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coleman.henry2mo ago
The real trick is listening to the chips, not the numbers.
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