No, I just made a program for the 3 initials with the height of the letters that I wanted and the spacing and the cad/cam program generated the program. I then converted this program to change Y axis to C ( changes linear to circular ) and used the diameter of the pin where I wanted it engraved to generate a new program.
Jim, I do these ahead of time by putting the pin in my 4th axis chuck. I make two passes but I'm sure one would be enough. I have the program set to cut .040 deep in two passes using a engraving bit. I start off around .025 above the surface and let the program run. If the engravings are to shallow and not wide enough I go about .005 deeper until I get the results that I want. These initials are about .025 deep. I run these at around 30 inch per minute. These pins are brass which is soft, if I was cutting stainless I might run more, shallower passes and maybe at a slower feed rate. I don't know as I haven't done one.
I also drew a program to put my initials onto cheap joint protectors. I took my three initials and made them circular. here's a couple of pictures of them but usually they look much better as I didn't clean the dust out of the cuts and the flash made them sort of grotesque looking. I started giving these joint protectors with each cue some time ago as they used to be hard to find for a Radial pin although that is no longer the case.
Dick