jroden, try a knife that has a decent edge on the slotted wheel. you'll be suprised what it can do to an existing edge. you should practice with some cheaper knives before sharpening your good knives.
I did a couple touch ups of already sharp edges with just the slotted wheel, worked great, I also sharpened all my moms kitchen knives for her, took them over to her today, she was amazed at how sharp I got them. So far the whole experience is easier and faster than a belt sander
