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saddle adjustment on atlas lathe

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  • saddle adjustment on atlas lathe

    I'm having trouble adjusting the cross slide on the atlas lathe..when moving cutter into stock I can see movement in the though there is play in the saddle?? Any suggestion on how to get that plat out and have it good an ridged.

  • #2
    Just adjust the gib for the desired smooth, shake-free fit. (Sometimes easier said than done....) If there is significant wear, you may never be able to get proper adjustment over the full range of cross slide travel.

    You may be also seeing "normal" tool deflection. Cast iron and steel are remarkably elastic substances, and the Atlas, while an adequate home lathe, is nowhere near as massive as, say, a Monarch.

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    • #3
      Careful your not attempting too deep a cut for the size of the lathe.Alistair
      Please excuse my typing as I have a form of parkinsons disease


      • #4
        There could be movement in any or all of the junctions between pieces from the cutter all the way thru the compound, saddle, bed, headstock, spindle, chuck chuck jaws, and work.

        And, you may see "relative" movement, but it might not be the thing you think that is really moving. Your eye isn't calibrated. I sometimes would swear the spindle or headstock moved, but it was really the work or cutter. Depends on where your eye is focused.

        Possibles (not a complete list)

        "Spring" in cutter holder
        Loose cutter in toolpost
        Loose toolpost on compound
        Loose gibs on compound to crosslide
        Loose gibs on crosslide to carriage
        Loose gibs on carriage to bed
        Wear on any of the above parts allowing movement
        Normal "spring" in any or all of the above
        loose headstock clamps
        Loose spindle bearings
        Chuck not seated right
        Chuck jaws not tight on work
        Chuck jaws loose in chuck
        Chuck jaws bellmouthed allowing work to shift
        Normal spring in work
        Excess spring in work stuck out too far

        You have to narrow it down a bit.

        What kind of tool-holder is it?

        Keep eye on ball.
        Hashim Khan