CroppyBoy1798
Established Member
bugbear I measured it out off an inch ruler, using ever eight to mark the point of each tooth (8tpi). I just put a little tick then on the flat of the fresh cut. Then filed in between everyone of these points until the new V cut reached the tick on either side. Holding the file at approx the same angle it took between 20-24 strokes to cut each tooth.