I also use the tip of an awl in my drill press. I also swing the table and drill an 1/8" hole in the table, about 3/8" of an inch from the edge. This allows the tip of the awl to pass through the leather and through the table. The table keeps the sheath square to the awl so the back side line of the stitches are straight. Also, I use the diamond chisel tools to mark the holes before drilling. I grove the stitch line after drilling to set the stitches flush. I think using an awl point and not removing material allows the hole to tighten back up on the thread after stitching, if you tap the seam lightly. This method allows me to use blunt needles, and not struggle to pull the needle through. If you have a tight hole, just use a hand awl to open it up a little. Also, being able to use the blunt needles (from Tandy), no more bloody holes in my fingers!!!