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large endmill RPM's

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  • large endmill RPM's

    I sometimes use 1" endmills to face off parts on my mill. Typical speed on mild steel being 400 rpm's MAX. Is there any reason for a very light finishing cut of a couple of thou that the rpm's can't be jacked up some to get a better finish.
    The shortest distance between two points is a circle of infinite diameter.

    Bluewater Model Engineering Society at https://sites.google.com/site/bluewatermes/

    Southwestern Ontario. Canada

  • #2
    You might be able to get away with it with plenty of coolant. Otherwise you will burn off your corners.

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    • #3
      Hi,

      I do that sometimes as a rough and finish pass on side milling. But like Macona said, you do excellent coolant flow. Brush on or misting won't do the job. And I only bump up the speed no more than 20% of roughing rpms. And most times less than that.

      dalee
      If you think you understand what is going on, you haven't been paying attention.

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