What to do for mirror edge?

About how many passes do you do run per film per knife?

Pfew, that’s a hard one. It’s a long time ago I used to count them. I recall that in the time I counted I did maybe on average 50 passes with stones. But highly dependent on state of the edge and steel.

I have tried 12-5 micron SO lapping film on s30v and they are no where effective as 1200, 1500 and 2000 grit AO sand paper.

 

 

Mods Please delete my attached pictures. It will not let me using the edit function.