Just followed the simple directions in the pamphlet that comes with the Spyderco Sharpmaker 204MF. The only knife I had that was ready for sharpening was my trusty VG-10 plain edge Manbug. My EDC is the Manbug + Some longer utility knife (currently a Byrd Cara Cara 2). I mostly do a lot of fine cutting on wood and hard plastic material, and then a little large scale hacking on boxes, ropes, etc. , so I use the Manbug about 10|1 over the Cara Cara.
At any rate, the Manbug has had maybe ten sharpenings since I got it, always using a Smiths Fine diamond and wetstone kit. It gets sharp, but not as sharp as it was out of the box. Not only did the sharpmaker get the Manbug factory sharp, I think it's maybe even a little sharper, if that's possible.
I was so excited I repeated the same process on the Cara Cara which seemed like it was still out-of-the-box sharp. I had zero expectations that the 8Cr13MoV could get as sharp as the little VG-10 blade, but I was wrong! With relatively little effort (compared to the Smith wetstone) not only is the Cara Cara is way sharper than it was out of the box, I see no difference between it and the edge on the Manbug. Sure, it probably won't keep as well, but it cuts, feels, and looks (under a jewelers loop) like the same edge.
Now I'll probably be up all night sharpening my other five Spydies, and the other two Byrds, and Bucks, and all the Gerbers, and Victronoxes, and Scharades... and the axe, and all the scissors.... GAH!
I'm one of those mildly OCD guys that can't sleep as long as there is a chance that there might be a knife in the house that's not as sharp as it can possibly be.
Tenacious Black Blade---Resilience---Persistence---Ambitious---Cara Cara 2---Hawkbill ---Manbug ---Tenacious Full SpyderEdge---Raven 2---Robin2---Matriarch 2
I'm only using black until Spyderco comes out with something darker.