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Re: [atlas_craftsman] Jaws for milling attachment?

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  • Elton E. (Tony) Clark
    *Thanks Jon, I m going to try even more alloys and more cutters to see if I can find the problem . . I ll chase my chatter-slack some more as well to get this
    Message 1 of 8 , Mar 1, 2010
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      *Thanks Jon, I'm going to try even more alloys and more cutters to see if I
      can find the problem . . I'll chase my chatter-slack some more as well to
      get this thing as rigid as possible.*

      *Curious, can this thing EVER cut mild steel?*

      On Mon, Mar 1, 2010 at 7:18 PM, Jon Elson <elson@...> wrote:

      >
      >
      > Maybe. If you are plowing full width with a 1/2" end mill, and going
      > 1/4" deep per pass, yes, I think you are expecting way too much for a
      > lathe milling attachment. With a very rigid setup, I can just barely do
      > this on my Bridgeport, which outweighs an Atlas/Craftsman lathe 10:1.
      > If you can't make any decent cut with .050" depth, and maybe just
      > milling on one side at a time, then something is wrong.
      > You need a rigid setup, make sure you are feeding the workpiece AGAINST
      > the rotation of the cutting edges, and make sure the aluminum is a
      > machinable alloy. There are a number of aluminum alloys, generally the
      > softer ones, that do not machine well - they deflect and tear rather
      > than slice. Make sure the aluminum does not get hot. It is MUCH better
      > to take shallow cuts and keep the feed moving rather than take one deep
      > cut, slowly.
      >
      > Watch out for the overhang of the workpiece from the cross slide. If it
      > can rock, even a little, it will perform horribly.
      >
      > Jon
      >
      >
      >


      [Non-text portions of this message have been removed]
    • jmartin957@aol.com
      In a message dated 3/1/10 8:40:36 PM Eastern Standard Time, ... Yes. Try it. John Martin [Non-text portions of this message have been removed]
      Message 2 of 8 , Mar 3, 2010
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        In a message dated 3/1/10 8:40:36 PM Eastern Standard Time,
        eltonclark@... writes:

        >
        > *Curious, can this thing EVER cut mild steel?*
        >
        >

        Yes. Try it.

        John Martin


        [Non-text portions of this message have been removed]
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