This is how I sharpened my new wedge grooves to add some extra spin .It’s worth noting that doing this can cause your wedge to become illegal for tournament play if you make the grooves to wide or deep .To sharpen your grooves (which works better with old worn out grooves) you just need a few bits; including of course a groove sharpener, wd40 or something similar and some tape to protect the face .I started by removing the head as I was reshafting it anyway but I do find it easier with a loose h