Cutter Sharpening?

[dave]

Haven't tried it, so I don't know if it works, but I've read on multiple occassions that if you roll aluminum foil into a loose ball and make servera cuts through it, you'll get some sharpening on 'lesser' blades. I won't bother trying it on my Xi or Palio, but if yous is dull anyway and new one still a ways off, probably can't hurt to try.