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Ball end mill in steel?

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  • #16
    Just rotate the shaft 90 degrees and use a standard flat endmill to cut a V groove.

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    • #17
      Originally posted by elf View Post
      Just rotate the shaft 90 degrees and use a standard flat endmill to cut a V groove.
      I would think I would rotate the shaft 45 degrees to get the V correct geometrically.
      Location: The Black Forest in Germany

      How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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      • #18
        Originally posted by Black Forest View Post

        I would think I would rotate the shaft 45 degrees to get the V correct geometrically.
        A cylinder cut at 45 degrees describes an ellipse. That may or may not be what you want.
        .
        "People will occasionally stumble over the truth, but most of the time they will pick themselves up and carry on" : Winston Churchill

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        • #19
          Originally posted by TGTool View Post

          A cylinder cut at 45 degrees describes an ellipse. That may or may not be what you want.
          What I meant was I would offset the normal flat end end mill to a point on the shaft that would be 45 degrees so the cutter would engage the shaft to be cut.

          Location: The Black Forest in Germany

          How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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          • #20
            I will just run my cutter perpendicular to the material. And I figured out it needs to be 2.5mm deep not 3mm. Click image for larger version

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            Location: The Black Forest in Germany

            How to become a millionaire: Start out with 10 million and take up machining as a hobby!

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            • #21
              Originally posted by Black Forest View Post
              The V grove does sound like a better solution. I need to measure the only V grove end mill I have. I think it is too big and I just bought 3 solid carbide round end mills!
              A v-groove end mill has the same problem as a ball end mill, but with less strength in the tip. In my not so humble freaking opinion the way to over come cutting issues and make a V-groove is to use the side of a regular endmill and do the basic math to get the groove dimensions to do the job.
              Click image for larger version

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              *** I always wanted a welding stinger that looked like the north end of a south bound chicken. Often my welds look like somebody pointed the wrong end of a chicken at the joint and squeezed until something came out. Might as well look the part.

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              • #22
                90 degrees = 45 degrees 2 hours after regular bedtime

                Here are the settings for a V groove instead of ballnose:
                Click image for larger version

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