Question- leveling lathe-order of ops

[???]

I have my own method of levelling that I use, like Marcus I think I may have invented something but probably not.

I first level the lathe front to back on ways at head stock and tail stock using inner sets of feet. Then I clamp a cylindrically ground bar in the chuck and indicate it within a few microns at chuck and on free end. I then run a micron DTI along the top of the bar and use the head stock outer feet to adjust the spindle parallel to the ways, I also check the front or back of the bar to ensure that my head stock is not pointing away from the ways and machining a taper.

Go ahead and burst my bubble by telling me you have been doing this for years

 

[Tyrone Shoelaces]

I have my own method of levelling that I use, like Marcus I think I may have invented something but probably not.

I first level the lathe front to back on ways at head stock and tail stock using inner sets of feet. Then I clamp a cylindrically ground bar in the chuck and indicate it within a few microns at chuck and on free end. I then run a micron DTI along the top of the bar and use the head stock outer feet to adjust the spindle parallel to the ways, I also check the front or back of the bar to ensure that my head stock is not pointing away from the ways and machining a taper.

Go ahead and burst my bubble by telling me you have been doing this for years

Why “ invent “ something that was “ invented “ a hundred years ago ? Just follow the Schlesinger charts like the makers still do.

Regards Tyrone

 

[???]

I've never seen the Schlesinger charts. I'm from deepest darkest Africa we still paint picture's on cave walls

 

[gbent]

On a bed that long twist is the biggest concern, then keeping the center height in line with both ends. I do a rough level with a .005 before I get the .0005 a day later. It makes the whole process go faster.

 

[jackalope]

Concrete is 6” pour and has been stable for 25 years. It’s not moving unless there’s an earthquake. It’s not getting bolted to anchor bolts. Because the floor is uneven for drainage, the leveling screws are up entirely on one corner and down opposite. That’s because it is near a drain.
I have it solidly seated in its foreseeable future spot. I’ll recheck in a month to see if the machine weight has moved the concrete. Highly unlikely. It was poured for semis to park on.