This is a handy tool that really simplifies sharpening. However, it has a few flaws.
Pros:
-Very Easy
-Hand Guard
-Lifetime Guarentee
Cons:
-Sharpens at 30 degree angle. Great for an axe, but for a knife, most people prefer a 20 or even a 10.
-Leaves black dust on the edge of cutlery
-Ok heres the big one: When sharpening, you press the axe into the sharpener and pull through the wheel. However, as you pull your axe out, it slices through the plastic in front of the wheel, there for somewhat dulling the axe. And sooner or later, you get deep cuts in the plastic, which really limits the sharpener's usefulness. Major design flaw.
Overall, the sharpener is great for axes, but for knives I tend to go back to the whetstone. And then there's the design flaw...