Hi, I've used grinders but a good file does the best job with the saw in a vice. Use a stump vice on the job. The block in the pictures is from a Blackbutt we did in 1980 and I've been sharpening this way ever since, do one side and walk around to the other, it only takes a couple of minutes. I dug the block into the ground so it doesn't move, I'm a bit attached to it now or I'd use my spare Ironbark one, it's only 10 years old.
