The 90 degree might be to wide and thus remove to much of the prongs. Use 60 degree gravers and tilt them a little away from the stone holes.I've been trying both an onglette and a 90 degree v for the cutting around the stones. I see the onglette mostly in youtube stone setter videos, actually I'm not sure if I've ever seen anything else. For some reason I loathe cutting with the onglette but I'm giving it more of a go. I've also been trying the 90 degree v and I'd have to say I prefer the feel of using it and I have them well polished so the bright cuts actually look bright. Thankyou for the feedback Sinterklaas, I greatly appreciate it. Ok, so shared beads never actually get shared over three stones? It's hard to see in videos whether they are getting pushed straight down on to result in each bead covering three stones or if there is some pattern to the pushing the beads so that they are being pushed sideways to beads holding two stones at a time (pave shared prong setting). I'm not sure how to eliminate triangular posts to be beaded between stones in staggered setting like this (pic).