I had a client drop off this strat style guitar for some work, and now I am going to level and crown these new frets. I started by sanding all of the frets until they were all the same height. The marker is a good visual indicator of how close I am, but I always double-check with a fret rocker. I then add a fallaway to make sure that the strings in the upper register have plenty of room to vibrate while playing. Once the frets are all leveled, they need to have a crown reintroduced. I do this by