For anyone that does, or is thinking about doing their own fret work: the Original Z File is about as fool proof as it gets for re crowning your leveled frets. Now you can do immaculate work with a 3 corner file, but it’s a skill that takes time to get repeatable results.

The channel in the Z File is angled in such a way that the File never comes in contact with the top of the fret. This is crucial, because if you nick the top, you have to re level all the frets; or best case, create a “fall away” if it happens to be high up the board.

There are 3 Z Files available from Stewmac. I only have the original; but I imagine the other 2 are just as awesome for their purpose. There are a few easily searchable YT vids for anyone interested in more info. Cost is roughly $100, and is well worth it if you maintain multiple guitars.