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Search results

  1. E

    Motion when locking the axis

    @PeterT awesome illustration! so not only is the front of the gib .0014" wider than the back, it would also be only making contact on the top edge of the opposing dovetail, all this can introduce side to side slop in the mechanism! And that's with the assumption that the surface are flat and...
  2. E

    Motion when locking the axis

    well I think that's exactly where the problem is, if the gib/dovtails were not tapered or the dove tails were just square ways this would be true. The compound angles formed by the front to back taper in combination with the dovetail angle makes this impossible as the CAD model shows. Let's...
  3. E

    Motion when locking the axis

    The CAD models are only meant to show that vertical movement of the gib on one end but not the other(like in my case) means that the gib is not making full contact on the dovetails on both sides (i.e. the mating surfaces are not coplanar). I think your statement is absolutely correct though(at...
  4. E

    Motion when locking the axis

    Another simple trick to figure out if the gib fit is off or if something else is going on, would be easy to try since I'm taking apart everything for cleaning:
  5. E

    Motion when locking the axis

    Until I reset and redo the measurements I thought I'd share the below video showing Keith Rucker fitting a tapered gib in a restored Monarch lathe: I know Keith makes it look easy but this is the process I was thinking of following to refit the existing gib or for that matter the gib blank...
  6. E

    Motion when locking the axis

    This appears to be Solidworks so I'm not sure how joints work. But in Fusion 360, I mated all 3 components together and grounded only one of the dovetail components. The mating joints were of revolute type(allows rotation around the plane) but I could have also used planar(allows rotation +...
  7. E

    Motion when locking the axis

    Yes it is the ultra precision version, that's the only one they sell now at least as of a month ago when I bought it. That's exactly what I'll do, I'll take it apart and do a thorough cleaning and assembly everything carefully so I eliminate the variables.
  8. E

    Motion when locking the axis

    I can definitely confirm that the gibs are axially stable on both X and Y at least visually. On the problematic Y gib, I do see oil squeezing out when i try to lock the axis but not on X. I can also hear the side to side play on the Y axis when I rock the saddle only back and forth…I hear the...
  9. E

    Motion when locking the axis

    @Susquatch @PeterT @Dabbler, I’ll start from scratch and try to be more methodical in my testing. I’ll take pictures of my testing setup and make measurements of my X and Y gibs and report back….maybe I was too sloppy with my testing and was seeing things that weren’t really there or perhaps as...
  10. E

    Motion when locking the axis

    I think I may have given the wrong impression: the gibs I have are only tapered in thickness but their two thin faces are parallel at least visually. Good to know that the lifting motion doesn’t necessarily contribute to incorrect gib placement and therefore doesn’t contribute to potential...
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