There's not much set on the teeth. The previous owner had not given any forward rake to the teeth, so although I am pushing, could as well pull! This design is just fortuitous, and could also be used by a left-hander. It’s actually on backwards, since the original rivet holes are at the far end! I have tried it, but it was made out of interest, and will probably never cut a tenon’s shoulder. I have been given a Japanese saw, it’s hanging up within reach, but I never think to use it. It seems to me that the user, when sharpening such a saw, must go along the blade 4 times with the file, or perhaps a second file, I don’t know.