I haven't heard of this and so decided to pass along an idea I got for repairing a neck with only a few wear spots. Don't want to pull the fret ? It is possible to file or better, machine the worn fret spot down, leave about 0.020 inches left to the fretboard. Now cut off a piece of matching fret and file upwards from the bottom of the crown until you have a piece that fits the space you filed off the worn fret. Now silver solder the piece in. Leave enough room to be able to crown it to fit. I'm sure that will work if you make the piece fit tightly into the space that was cut from the worn area. This method is intended for those who do not want to pull the whole fret. You need to be able to quickly solder the "plug" in. And be sure to leave enough room to crown the plug to the fret under repair. Good luck, I am thinking about trying this on a bass I have with a few divots under favorite fret board positions. Not bad enough to do yet. Luthiers and owners alike could benefit from this, a quick easy repair job to a skilled master, money saved from the $300 refret job, and the luthier at least gets a job which may have been rejected for a full refret.