Fixing an undersize bushing

[JustMe]

If you are going to silver solder or braze the joint, the straight knurl will leave space for the solder or brazing material to flow into.

Jim

 

[rklopp]

If an undersize part is not the result of bad measuring, then it must be the result of unintended tool movement. To catch it in critical situations, you can put an indicator against the toolpost. Anchor the indicator base to the lathe saddle. You'd be surprised how little bumps and so on can make the cross-slide creep inward. A DRO will show the same thing. The motor on my Monarch lathe accelerates so strongly, that even the Monarch's cross-slide will creep a few ten-thousandths upon starting, due to the slight pre-tension in the cross-slide screw.

 

[chipswarf]

Roger on the crossfeed creep (the phenomenon, not the ne'er-do-well). I was taught to give the tool post a little tug to zero the backlash before engaging the feed. This, on a well worn lathe.

The same thing can be done with a simple fix that also changes the stiffness of the tool setup, which can eliminate some harmonic chatter: stretch a hefty rubber band over the tool post and the cross feed stem. Really looks professional, too.

Mark