Broke down and bought a diamond chisel set (Tandy had a 3/32, 1/8 and 5/32 " pitch set on sale), now my forth attempt at a band is good enough I do not have to hide them in my watch drawer! Really improved my stitching with consistent hole size and spacing. Next to to finalize on what thread to use. I am presently using thread we purchased when sewing boat canvas. I wax the thread and double it for stitching. Looks good to me, but perhaps I should twist the thread rather than running them parallel? Any one have some insight to share. The wax thread from Tandy is just too thick.