Thanks for the pic, looks like you stripped the blade? also looks like a Puko (I think that's how it's spelled) also seems like it would be ridiculously handy. by the way do you think if you left the coating on that only the polished edge in your pic would be left without the coating and exactly how long is the blade from what I gather 4 1/2 - 5 inches? sorry about all the questions but all replies are greatly appreciated.
I'm not sure how the pd looks like a puukko. puukko's generally have much lower grinds, less then 1/2 of the blades heigth, and they tend to be zero ground. The stock thickness on most puukko's is also much thinner, less then 1/8" thick.
http://homepage.mac.com/zombiekiller/badmojo/pd.html
pay close attention to the spine show of the tip in that image. note how it goes from 3/16" thick to edge in less then 1/2", and a THICK edge at that. the front edge is not made for cutting on this knife. The hollow ground versions have much better main edge geometry, but the tips and front edge are still WAY overbuilt. The pd is like the pure bred fighter series, but some how made to be thicker at the tip. which is really saying something. the pbf's are the tankiest knives in the entire busse catalog. even the off duties have thin edges.
yes and no about the coating. with the edge pro apex sharpening system, it gets kinda hard to keep the coating pristeen when doing radical sharpening like this. 1/8" of the coating above the edge would have been smoothed out even if I taped it off from the stones rubbing against it. at the angle it's sharpened at, you'd get about the same results from hand sharpening.
as a general fan of all things busse, I love and hate the pd, just as I love and hate the pbf series. The larger pbf works okay as a chopper becuase of how thick it is, but they are all terrible cutters. I love thick knives, but when the edges are as thick as these, you have to realize that they are not going to cut well at all. and realistically, it's not even good at stabbing things. because the tip gets so thick so fast, you are more likely to have the knife stop dead after 1/8" penetration. It's made to withstand HUGE amounts of abuse, not to do any particular task efficiently.