MusicNomad (ミュージックノマド) フレットを丸くする作業用ヤスリ MN850 【国内正規品】

After 3 refrets with this crowning file, I can recommend it highly. The design of the tool virtually guarantees a very fine crown everytime. With two different sized grooves, it can cover most any size fret and does handle stainless steel frets very well. The one caveat I would add though is for first time users. Make sure you use the correct size for your fret job and always clean your file often to remove any debris that could hinder the workability of the file. Ergonomic and well weighted to allow you to let the tool do the work. Highly recommended

This is my 5th file in 7 years of hobby luthery, and I finally found it! Thank you Music Nomad! This thing works so much better than Z file from Stewmac it is not even in the same league.

If you’re ever worried about messing up your frets while crowning, then worry no more. These things are incredibly user friendly and a perfect way to get perfect frets

This crowning file is amazing. The no-grit “safe zone” is truly a game changer, and I think you would have to try very hard to botch a crowning job using this. You can just feel when the crowning is done, and the file just starts gliding across the fret without sanding anymore. Much faster than the standard filing methods, with lots of stopping and checking. It’s amazingly simple. The only actual drawback is that if you start your learning journey with this file, you’ll never learn how to do it the old school way, so you better not lose this tool. The only other thing to note is that the 240 grit does leave the frets a bit rougher than I’d like, so they do take a bit more work/time during final polishing. But the timed saved on crowning more than makes up for it, and then some. I posted some pictures of the progress of a single crown. You can’t expect amazon to put the pictures in order, but you can get the idea. Absolutely 5 stars, even a this fairly high price, it’s worth every penny.

Works 100% as described by the manufacture. I used these on a guitar to reform the crown. Very smooth and has 2 different sizes based on your guitars fret size. Heavy duty and should last a long time for the amount for fret work I will be doing.