07-06-2012, 07:51 PM
I made one from a kit a few years ago. Quite handy for cleaning up internal keyways. Andrew you can make your own files, snap the tang end off and grind the other end down to where it will fit in a piece of tubing, JB Weld the new tang into the tubing, then chuck the file and turn the sleeve to fit your jaws.
Free advice is worth exactly what you payed for it.
Greg
Greg