powdered metal end mills ?

72bwhite · Oct 31, 2013

What do you use for feeds and speeds with powdered metal end mills.
Is it like a cobalt or is it like carbide?
They look like a good solutions for a 304 part I'm working on that likes to eat the corners on my carbide.
Any one use them how do they work?

Red James · Oct 31, 2013

Powdered metal end mills can be made from several different alloys. Strictly speaking, all carbide tooling is made from powdered metal. If you are burning the corners off carbide tooling then slow down your rpm, keep feed up, and use the largest radius on the corner of your tool as possible.

westk · Oct 31, 2013

It's kind of an in between you could say. You can run it at slightly higher SFM and chipload than Cobalt but not nearly as fast as carbide. At least in my experience.

The other benefit is the tools are usually a little more sturdy than regular Cobalt, but that could also just have to do with the actual core diameter of the end mills being compared

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powdered metal end mills ?

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