Aren't they meant for axe? I recall even the fine side is very coarse.
Mike, thanks for the info.Yeah, I was careless in my posting; I would be using a puck for my axe, and not for any knives, unless I got myself something like a big machete.I've always used a file for sharpening my axe so far and had no problems. I have a nice double sided one with an integrated handle (all one piece of steel) that's got a medium single cut side and a course double cut surface on the other. It's compact enough to stick into my pack and an old toothbrush works fine for cleaning it.I was just wondering if there might be any advantage to using one of these over a file.