Figure 5 – Surface of pivot after using a pivot file

The next step is to use the coarsest face of my ¼ inch wide hard Arkansas stone to refine this surface.  Figure 6 shows the improvement:
Car Wash Dave surface
dry and cracked riverbed in Maroc
CadillacMountainSunset_FAA
Bizarre Surface_SD
Bizarre Surface_SD
Bizarre Surface_HD
TurtleRocks_FAA
StarFalls_FAA
Bizarre Surface_SD
Bizarre Surface_SD
Bizarre Surface_SD
See photo in original gallery.