Newall DRO on 14x40 lathe

[petertha]

To align the bar, I clamped up 2 jigs like picture using 123 blocks & parallels. They sit on the lathe bed & flush against the dovetail corner so that position is constant down the bedway. One jig sets height of the bar (contacting the top). The other sets setback distance (contacting the rear). The post/clamp hardware on either end allows you to set these independantly. While adjusting the end posts to their setup point, the encoder is left loose to float. I made slots in the encoder plate so they can be moved & shifted as required. This is a prerequisiste because its hard to get drilled & tapped holes bang on. You dont want to put any strain on the tubes.