sounds interesting , i shall look into those, but before i do i
thought i would share a solution to the same problem, having been a
past sufferer. Some time ago a woody friend in Australia showed me
an ingenious idea for a file handle. He had recently acquired a
substantial number of pipe bowls from a deceased estate of a pipe
maker and found many uses for them including a handle for his files,
they give good grip and with the bowl facing down keep the the wrist
and hand in alignment. They also are a great conversation piece.