Hi Gary, Welcome aboard. I cut Oramask 810 and Tamiya sheets without the mat and I've had no issues. I feed the masking material attached to its backing paper directly in the machine. I've even cut sheet styrene without the mat. In the page setup, select "None" under the Cutting Mat section. For masks and without mat, I usually go with Bade depth 1, force 5, speed 3, 1 pass. Best of luck.