I found a router/dremel bit that might fit the bill. I'm gonna try it out this week if i get the time...
I'm also looking into the checkering tool, maybe the edger kind and it'll be a rounded checkerboard pattern.
...and here's my second set of Rip's Grips. These are made from Hawaiian KOA wood. I'm saving these for my next 1911, but I wanted to try 'em out on my Springer so I could show 'em off. Ain't they purdy!!!
The fit is perfect rip! They snapped right on over the bushings and there's no play in them at all. Excellent work once again Sir...