30624Re: Smooth Cuts??? -
- Jan 5, 2004
> Date: Mon, 5 Jan 2004 02:46:09 -0500with
> From: "mertbaker" <MertBaker@...>
>The cross slide nut was badly worn on one of my lathes. I repairded it
>some "thread restorer" goop from loctite that I bot in an auto parts store.Hmmm...I'll have to try it sometime.
>Seems there are several other brands, too. Claim is, the resored nut is
>equal to grade 5 strength. all I know, is the slop is gone, and to follow
>the instructions exactly, or else.
>> >My cross way slide is smoth, it moves from play in the cross wayThe saddle dovetails could be worn such that they are no longer parallel.
>> >screw. Its probably worn...and I need to get another. Im guessing
>> >the gib adjustment are the screws on the sides that tighten the
>> >crossmovement? I adjusted the easy movement with a little tightness.
In this case adjusting the gibs with the cross-slide backed all the way out
will result in it binding as it moves inward. The only cure is to mill the
>> The gib should be tightened to keep the cross slide from rocking or anyThe current issue (Jan/Feb 2004) of Home Shop Machinist has an article about
>> looseness. Tightening it to try to compensate for backlash in the
>> screw will just lead to even faster wear. The nuts on the handle can be
>> adjusted to take out almost all the free play in the thrust bearing for
>> leadscrew. There is no provision for removing the backlash on the
>> leadscrew/nut, however. (Some high-end lathes have backlash compensating
>> nuts that allow you to reduce backlash to a very small value.) The only
>> solutions I know of are to apply Moglice or other castable liner material
>> in the nut, or to make or buy a new nut. They really aren't that hard to
>> make. (Note that the cross slide screw is LEFT hand! I missed that
>> detail when I made a new screw and nut!)
repairing leadscrew nuts using Moglice. As Mert says, follow the
instructions exactly. The other cure for a worn nut is to make or buy a new
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