This is the first time I have forged any tool from an old file, so I approached hardening with some trepidation. Because it could break or distort. Using a process described in “Practical Blacksmithing” (ed MT Richardson, pub. 1891), I used linseed oil, which gave it a very attractive shiny black, but of course, to temper it, I had to grind it back a bit and polish it somewhat. Then I laid it on a red hot steel bar I had bent to the curve along the back to draw it to, mostly brown, with touches of purple, before sharpening. It is not especially attractive, or refined, but I do not mind so long as it retains an edge and does not break. That it is so obviously homemade shows some accomplishment, I think. The blade is 8” long & 7/8” wide.
The handles are salvaged from the bottom of a chest of drawers. I like this style, and is fitted to short tangs.