Anyway, in my constant quest to get a smooth, silky and yet strong nylon string tone, Max Brenner, founder of the SoundFile [https://www.facebook.com/thesoundfile/] came to my rescue kindly sending me one of his fantastic nail files to try out. The SoundFile is specially created for guitarists aiming to get their perfect sound.
The first thing I noticed was how different it looks to any other nail file I've seen - and that's a lot of nail files let me tell you! It's beautifully crafted out of glass and wood and and has it's own similarly beautiful, velvet case.
Now, I'm lucky enough to have two superb, classical guitars, a Ramirez Class 1A and a Marcelino Lopez which sound absolutely wonderful.....however, neither of them hide scratchy tones from any little nicks and ridges in my nails - quiet the opposite, if anything they make them sound worse!
I remember along with my fellow guitar students at the Royal College Of Music in London being impressed with John Williams, nonchalantly filing his nails with the side of a match box as he walked up to the stage to play flawlessly at the Segovia, memorial concert there back in the late 1980's.
As for me, I've spent hours and years scraping away at my nails with various bits of sandpaper which often left my hands so filthy that they needed scrubbing before I played! Now I've got my SoundFile, I can super quickly and cleanly file my nails and create the sound I love. Thank you Max, my SoundFile has pride of place in my guitar case!