Abstract: A rotary blade for an interchangeable rotary cutter comprising perfectly spaced teeth. The rotary cutter and blade are passed over wearable fabric creating perfectly spaced slits in the fabric which are spaced far enough apart so that the fabric will not tear when pulled. The user can hand stitch ribbon, cord, heavy thread, yarn or other embellishment through the slits creating a decorative edge. The size and shape of the slits allows the user to hand stitch without having to tug on the needle. Slits created in multiple pieces of fabric allow the user to seam the pieces together using ribbon, cord, heavy thread, yarn or other embellishment creating a decorative seam.