Cons: Effectiveness, Overall Quality, Ease of Use
problems, problems, problems
First, the stone holder's brackets are too tight, so the stones have to be jammed in, and then the diamond plates bow visibly. Second, the guide rod does NOT extend straight from the holder. This lack of straightness changes the effective sharpening angle as you sweep from end to end. You cannot get a specific angle this way. Instead you'll round off the bevel. Third, the clamp's two guideposts are visibly warped (cheap plastic injection), and the two will not hold the same angle even though they're both set to the same number of notches. Fourth, even if the two guideposts were straight and consistent, they don't have enough notches for fine adjustment. Fifth, the whole clamp is too flexible, being cheap plastic. You can crank that knob until the jaws are bowed, but the clamp can still slip off, and then you have to start over. FRUSTRATING! Sixth, my tapered rod for serrations has a couple of defects: big gouge on the outside, plus it seems the internal threads got coated with diamond - I can force the guide rod on for only one or two revolutions. Nothing about this system inspires confidence. The theory is sound but the actual execution is woefully lacking. I do like the stones, but I've resorted to using them freehand.