My experience with D2 is that it doesn't take the best edge with very thin angles. I think that this is because D2 has a larger grain structure than some steels. So, I may back bevel with the 30 degree angle on my Sharpmaker (15 degrees each side), but then I put on a working edge of 40 degrees (20 each side). YMMV, but this is the best way I've found to get a good shaving edge on D2.
That´s quite large angles.
I´ll have to give it a try.
Thanks for the tip, Guyon!!
/ Karl