As Jonathan says - I am an owner of one of his old sets. I've just used them for the first time this weekend...
I cannot tell you how much easier things worked out because I have these things now. I dithered for years over getting some - but it always seemed a tad expensive.
For example, the last time I was @rsing around with nut slots was a few months back - thin bits of sandpaper, modelling knives... etc... And then when you've completely messed it up, get a pre-cut Tusq nut - and even then there's hours of sanding the sides to fit and then sanding down the bottom (or shimming it if it's too low).
With actual nut files, a terrible "this nut is a piece of utter sh1t" was fixed in 20 minutes (and that was going very slow because I was a terrified nut-file-virgin). I now know the last nut I chucked and replaced with tusq was fixable :roll: (£5 or so for the nut, p&p, plus 2-3 hours of my time...)
The last time I considered buying a new set of files was from Touchstone Tonewoods - and I would recommend them to deal with, nice chaps.
http://www.touchstonetonewoods.co.uk/ttwp7.htmlHere's the info I got from them at the time (I actually know the bloke, used to share a house with him, hence the "to be honest" downgrade-the-sale bit!):
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Sure - the gauges are as follows (part no.9915)
.016", .028", .040", .045", .054", .062".
We also sell a 10 file set (part no.9916) -
.010", .013", .016", .024", .028", .032", .036", .042", .046", .056".
To be honest, the 3 file (double edged) 9915 set will probably do from .010" - .070" or thereabouts if used with some skill.
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After yesterday's (at first) tentative work, I can confirm that I would have been happy with the 9915 set - £66.45 at the moment - it will do the job he said it would (but I was convinced at the time that I'd want the 10 file set!).
If you own more than a couple of guitars, and might possibly buy just one more (or might possibly change string gauges one day), and you like being self-sufficient in the guitar maintenance department - then based on yesterday's efforts I would say it is well worth the expense :D