Adults only, I think that tip was written by a Fellow that doesn't come around here anymore. Jim Profitt, I remember reading about it years ago and think it was a little more involved than that.Yes it did mean on a lathe, and the blue was to mark the spindle. The blue is used by machinists to mark things.

Wonder what ever happened to Jim?


Tommy
59 apache 1/2t
261 short stepside