Hi, the bluing removal of the Uberti 1851 cylinder was accomplished by soaking the cylinder in vinegar for 45 minutes, the first photo.
The cylinder was then mounted in my minilathe using the 7/16 bolt described before. Five minutes of file work and ten minutes of different sandpaper grits completed removing the engraving off the cylinder. The cylinder was then polished using Flits on a buffing wheel, the second photo.
Cylinder diameter measurements:
Bolt slots = Before filing 1.534", after filing sanding and polishing 1.5335"
Engraving = Before filing 1.535", after filing sanding and polishing 1.530
Very little metal was removed in the area of the bolt slots, 0.005" from the engraved area. IMO removing that little metal is of no significance.
This morning I will nitre blue the cylinder.
Regards,
Richard