Interesting, I've never used them but I have read some pretty bad experiences concerning the Grobet USA files.
As you can read here
I was also a bit surprised to learn that the Grobet "USA" files aren't actually made in the USA, but in fact are made in India.
A few months ago I was lucky enough to stumble upon a source of NOS Nicholson bastard cut files in 10" for less than $6 a piece, and then in 8" and 6" for less than $4 a piece, so I got a couple of each. The 8" and 6" also happened to be Black Diamond which was a nice surprise.
Aside from that, I've also been looking for a brand that I can get some nice swiss patterned files in as well as some American smooth cut that are reasonably priced.
I have some old Disston swiss cut files that came in a batch of used files I bought maybe over 6 years ago which unfortunately are mostly dull. The #2, 4, and 6 cut ones would be great to use while sharp. I was thinking of trying to send a few of them in to be resharpened, but the teeth are incredibly small on them, at least the #6, so I don't know if it's even possible.
It really is unfortunate that there isn't a single file company making them in the USA anymore, at least not that I'm aware of.
Anyway if you guys
are having good experience with the Swiss-cut Grobet USA files I'd be interested in giving them a try sometime. If you don't mind me asking, where have you been getting yours from?
~Paul
My Youtube Channel
... (It's been a few years since my last upload)