I like Invisi-grip, but I want to try the rubber cement idea. Sounds like it would be even better. Even with Invisi-grip, the ruler will move. I have always followed the advice to hold down the ruler in the area you are cutting, then "walk" your fingers up the ruler as you continue to cut away from yourself. Any time I try to hold it in one place and cut the entire length, it slips a little on me.