- Jan 11, 2018
I've had my Shars BXA/250 sized tool post for a couple years. It's had a persistent issue where if I tighten the top nut to lock the tool post in place the release lever would get stiff. I usually just backed off the top nut a bit and it was fine. Occasionally the toolpost would move though. Today I took a look at it and decided to unscrew the barrel nut that goes through the center of the tool post. I measured the depth of the nut and the depth to the shoulder that the nut is supposed to seat against. They were almost exactly the same. I measured the OD of the threads and barrel and put it all back together. I turned a piece of brass and parted off a few shims of different thicknesses. After a few attempts I found that a .007" allowed the barrel nut and top nut to be cranked down and still left the quick release handle free to move.