that is one cute die filer!
my filer seems to run slow, next time i have it out i will take a video of it, and you can let me know if it is too fast. I haven't used it in a coons age, i should think of something for it, or leave it set up. Seems getting the bugger out, it weighs an easy 150 lbs, is the biggest deterrent to its use.
I never thought of grinding files down, makes sense now /forehead smack
I as going to say I wouldn't think one would want a fast moving machine for filing. I would prefer a slow and steady stroke/cycle so I could control the layout line. I've reshapened die sections that were split in the corners because die filers were not used. They look like nice machines. EDMs apparently replaced them in the die building shops.