Knife Handles

[finkm1]

I am building a neck knife, I bought a blade and a cocobolo handle from Helle knives. Does anyone have any tips on working out the slot in the handle for the blade. I work in a machine shop and can drill a couple of small deep holes but our smallest round file is still a little too big. Any tips on where to buy real small files to work the slot out would be helpful  Thanks!!

[Ragnarok Forge]

You are on the right track for getting the handle fitted.  Look at craft stores for thin / fine files.  Home Depot or Lowes will at times have mini file sets that come with multiple files in a little kit.