I make templates out of cardboard and then put my regular quilting ruler on top of them to cut. Works for me and the price is right. A small piece of sandpaper glued on the template keeps it from moving. I used this method before rotary cutting and fancy rulers came out when we were drawing around templates and cutting the pieces out with scissors. Back then used it for hand piecing as you hand sewed along your drawn line. Now I just make my template 1/4" bigger around all sides to allow for machine seam allowance and don't draw lines.