I have been thinking about using a zero fret on my current project guitars. I really like the idea. It seems to make a lot of sense. I was looking at this: ZerO Glide | Fretted Instrument Replacement Nut System It's a zero fret conversion nut. Has anyone used one of these? I was having trouble figuring out the right nut size, and the cost is $30, so I started to think I could make my own. Essentially I just need a regular nut with a step on the fretboard side. My first idea was to make a jig that would allow me to swing the nut over the top of the router table in the arc of the fretboard (12" or 16" for example). After some thought, I started to think it would be too difficult to hold something as small as a nut in place, and the router blade might knock it free. My second idea was to just sand down a regular nut and add a shim on the fretboard side. The shim would be as wide as the shelf of the fret, minus the width of the tang.