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Yeah, D2 is tough to work even before heat treating, I went through several belts on one blade. My sander is only a 1x42, so I have to go slow during shaping. I use home made wooden jigs that I clamp the blade to when doing the primary bevel grind. I then use a file to start the secondary bevel.
Yes, I have a set of medium sized needle files that are diamond, and have three 6 inch diamond sharpening stones in various grits.
Have you ever tried to sharpen a Buck sheath knife? Those blades are very hard, and take quite a lot of work to sharpen. I've made a couple blades out of old wood rasps and out of W2, those were easy to sharpen in comparison. I was told by a knife smith at a gun show that D2 will produce a blade similar in hardness to a Buck knife, so I decided to give it a try. The one I am working on now will not be sold even if it survives testing. The next two will be for 2 of my brothers-in-law. After that I may see if I can sell some made with D2.
Good video, explains the brass rod test very well.
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