Good post OWE, few people realize the true angle reached on these type of sharpeners. I have read comments re: the KME system from people who "dish" the device because it will only go to 17*. They want their 15* or nothing.
There is nothing wrong with an angle of 15*, but people do not think, or take into consideration, the actual effect the distance from the edge of the clamps to the actual edge of the affected knife has on the finished angle. All the more need to use an angle guide if these angles are critical to the end user. However, in the real world, an angle margin of 2 - 3* would not be noticed or result in the end of the world.
A lot of time these same nay sayers brag on their ability to hand sharpen on various stones. Their results probably are 4 - 5* off what they think it is. (speaking averages here, not everyone included). For myself, I use the paper wheels, and I am very satisfied with the angles I wind up with on my knives, and the knives I sharpen for other people. I adjust the final angle for the intended use of the knife and the type of knife. They probably vary from 15* to 25* per side, and all will push cut phone book paper when done. Sharp enough for my uses, and for the people I sharpen for.
I would buy a KME system in a heart beat if I had the funds in my sharpening-knife collection budget. I have some people I sharpen for that would feel better if I did not take a "grinder" to their knives. (They don't take into consideration the factory their knives come from used "grinders" of some fashion to make their knives.) So, if someone is "right", it does not pay to argue with them. Just smile, nod your head and move on.
Omar
