How to fit a wooden file handle onto a file (or, in this case, a thread chaser)

I needed to put a handle on a thread chaser & I'd recently seen a bit of a video of someone making a tapered reamer to open out the holes in wooden file handles, which I thought was a bit unnecessary, so decided to do a short video on it.

[onpsxmember]

If the steel gets too hot you mess with the heat treatment. The good ones like from glardon vallorbe for example are one piece hardened the whole length. You can drill several steps in the handle where the taper will catch. No need for a reamer.

[zhallquist]

How did it hold up? About to order some new handles for old files I found and have no idea how to attach them

[richardheasman]

You made a right dogs dinner of that one!! Wonky handle and too small surely!!