your video rocks!!! i finally found it. i think it works on the same logic, its adds some room for the leather to flex instead of compressing against the blade. I'm an old guy with flip phone so I don't do videos lol. maybe i can get my son to help me out. you know i was just thinking if a guy were o cut a piece of 4" pvc in half and slide it under his leather so he was cutting on top of a convex surface it would work pretty good for long straight cuts, i'm gonna try it .