DocsMachine
Titanium
- Joined
- Jan 8, 2005
- Location
- Southcentral, AK
I just got my big Springfield bed back from Schaffer grinding, and getting ready to start assembly.
I figured I'd give it a good try at leveling, then bolt all the goodies on, and give 'er another go, or a fine-tune or whatever.
My question is, can I assume these two faces are more or less coplanar?
The freshly-ground flats were ground different amounts (.0085" at the front, .005 at the back)
and while they ground a flat at the top of each prismatic way (they used to be rounded) the two vees are different sizes and the flats basically can't be coplanar.
However, while I'm not exactly a lathe-leveling expert, I'm given to understand the actual level is not as important as being level to itself.
That is, those two surfaces could be out of plane with each other by 20 thou, but that doesn't matter, as long as they're off by that same amount all the way along the bed.
Am I right about that?
I'll be raising and repairing the carriage with the cast-in-place method using Moglice, so I'll want to have things as true as I can get 'em.
Also, on the actual leveling: each base pedestal has four adjusters. How do I coordinate those? Run both front or back corners in the case of a twist, and crank all four equally in the case of a tilt? Or is there some trick to tweaking multiple adjusters in a case like this?
Doc.
I figured I'd give it a good try at leveling, then bolt all the goodies on, and give 'er another go, or a fine-tune or whatever.
My question is, can I assume these two faces are more or less coplanar?
The freshly-ground flats were ground different amounts (.0085" at the front, .005 at the back)
and while they ground a flat at the top of each prismatic way (they used to be rounded) the two vees are different sizes and the flats basically can't be coplanar.
However, while I'm not exactly a lathe-leveling expert, I'm given to understand the actual level is not as important as being level to itself.
That is, those two surfaces could be out of plane with each other by 20 thou, but that doesn't matter, as long as they're off by that same amount all the way along the bed.
Am I right about that?
I'll be raising and repairing the carriage with the cast-in-place method using Moglice, so I'll want to have things as true as I can get 'em.
Also, on the actual leveling: each base pedestal has four adjusters. How do I coordinate those? Run both front or back corners in the case of a twist, and crank all four equally in the case of a tilt? Or is there some trick to tweaking multiple adjusters in a case like this?
Doc.