The Fret files worked out perfectly

***** top service and quality

I bought this for making the slot for screws I have to make for clocks sometimes. It works great. It is hard to find files like this at this price.

These gauged nut files are a must have for anyone’s workbench!

Will use to lower string action with precision.

I sandwiched the .010 between two half round dowels and zip tied them tight. This allows you to hold it, depth gauge things, a bit and not break the file. They cut through a brass nut with no issues. In fact the best advice to give is go slow. A .003 inch mistake could result in starting over.

Haven’t used them as of ywt

I bought a full set of 6 to suit gauge 10-46 strings. Seem precisely made and have a nice sharp cutting edge.
I am tackling the original nut on a 1990 Gibson Les Paul, which has never been touched and is too high and uneven across the strings (Even the tech I used avoided touching it!) not sure what its made of, but it's hard and slippery/wear resistant, a bit like nylon. It is taking a long time to remove material but that's not the files fault! At least there is little risk of accidentally cutting too low.
Achieving a nice rounded nut slot, very smooth finish too.

Just a shame that the 0.035" file is not 0.036" to suit a very common electric string size!

I bought this so that I could install a new nut myself instead of taking it to a local luthier. Very pleased with the results.

These files does exactly as advertised. Cuts through bone and man-made nut material like a hot knife through warm butter, quick and accurately.