I just picked up a Queen Whittler in Smooth Black Cherry (Delrin). This thing was pretty dull right out of the box. D2 is pretty tough to sharpen without diamonds. I have Sharpmaker but not the diamond rods. I had to rubber band a EZE Lap diamond rod to the sharpmaker to thin out the edge at the angle I wanted. I put a 30 degree back bevel and a 40 degree edge and it is almost where I want it to be. The blade will sometimes snag while trying to slice paper so I need a bit more work on it. I may just set it aside until I can get some 204 diamond rods. I've been looking for an excuse to buy them anyway. I have not even started on the smaller blades. Overall the Queen Whittler is a nice piece. It will see some pocket time as soon as I can get the edge right.