Forgot to say I use my martelli with the slide cut ruler? Not sure of the name. The ruler that has posts that come down when you press and holds your fabric better than normal rulers. You use the slide cut in your left hand as you use your ruler from the right. Hands and fingers are safe this way and I get perfect cuts, not like before when my ends always ended up thinner from sliding from lack of pressure that far away from my hand. This evens it up. The martelli fits this to a T.