My initial usage of the Hartsook was to whittle a couple of sticks and it did OK, but needed some edge work, which I did and my aging hands had trouble with it at first. Stiff fingers need something to hold onto, so I took advantage of the slit in the sheath and inserted the handle of the Hartsook until it snapped in. Then I whittled a couple of tent pegs from some oak deadfall and even without lashing the knife and sheath together, it's efficiency rating went way up.