Its all in the legs. No, wait, thats my fastball. Just set the blade depth carefully. If it doesn't cut through the first part it shouldn't cut through anywhere. The thickness of the mat and the blade depth don't vary. I've always done this, starting with manual cutters (not the guy from tex-mex) and now on my Wizard. It's okay to leave some paper backing, you don't have to cut all the way to the fabric just nearly. Some boards are more work than others but it's not that hard.