I really wish my first customer has chosen a knife with simpler geometry. For future projects of this kind, I will have to make some more attachments for my belt grinder, because it is woefully inadequate for the concave false edge. I messed that up several times already and quite a few times I got frightened that I will have to start all over again. Whether I manage to correct the slight flaws that are in there remains to be seen, my guess would be no. It will cut alright, but it won’t be perfect no matter what I do. Grrr.
This weekend I have spent with grinding as much time as I could – approx 4 hours each day. More is not possible, at least not for me. Grinding on belt grinder is for me very mentally tiring, because I have to concentrate a lot more than I had to when grinding manually. Because whilst grinding on the belt grinder is quicker, it is also possible to make mistakes quicker.
At this point, I should be finished with polishing, but I am unfortunately not even halfway through. Mainly I have myself to blame for this. If you remember, when writing about the kitchen knives I mentioned that after the first grind with the magnetic jig I went back to freehand in order to be able to alternate the angle of attack to get a flatter and more even grind. Well, I forgot to do that with these two knives and I ground them both up to 120 grit ceramic belt on the jig. The result was ever so slightly wavy grind that I had to correct now that the blades are hardened. So I had to start all over at 40 grit and work my way up, sweating profusely whenever my hand slipped slightly. But at least one thing is clear now – whatever misgivings I had about the blades being perhaps not hardened properly, I do not have them anymore. They are extremely hard and tough to grind, which is why it took me so long to get to 150 grit today, which is the point at which I had to call it quits.
I estimate I will need about ten more hours overall, on and off the belt grinder, before I can call these two blades finished. That means at least one more weekend. At least. It also means more than double the time that I think it should have taken me. When I am done with this and with the kitchen knives, I will probably make a batch of these blades as an exercise, I must get the muscle memory and experience and know-how to do a proper job in a reasonable time, I cannot dick around with one blade for months on end anymore.