Is yours the Schrade or Gerber model?I could touch up an almost sharp blade with it ,but if the blade is dull Its useless too me.
How does it work though? Is it just a piece of steel, or are there carbides or something stuck onto it, like a diamond hone? I can't see how something like this, if it's just a piece of steel, would sharpen anything more than a chef/kitchen steel would. (Chef/kitchen steels being only for realigning the edge if you've rolled it.)