how hard is a typical firesteel? does this vary with manufactuer?
i have used the back of a knife to make sparks a few times to see how this could work, but I wonder if there are knives that would be damaged significantly by doing this if they are much softer than the firesteel.
i have used the back of a knife to make sparks a few times to see how this could work, but I wonder if there are knives that would be damaged significantly by doing this if they are much softer than the firesteel.