Recent talk of wingman reminded me of this so here goes.
I can't be the only one who think the ruler on back side of file is useless, so disassemble the torx screws, move the spacer between opener and handle to between package opener and file, take your favorite sheet abrasive to cut to shape and glue on ruler side. Voila, two sided file.
On retrospect, I probably should've used silicon carbide paper instead of aluminum oxide sanding belt, so it would work on more stuff. Oh well, I'll do that after this wears out.
