Oh, how to use it... squeeze it on every other tooth, flip it 180 and squeeze it to set the "tooth kerf" the opposite way on the way back down the saw. Really simple and perfect.. I think Gramps used it after he used a file in a homemade "jig" to set all the teeth at the same elevation first. Sharpened all by "eye" in the '40's. Lucky if there was 110 V power on his block back then.
steveo |