When you are cutting out fabric does your ruler slide all over the place? Mine did, but then I read about Invisi-Grip by Omnigrid.
I was skeptical at first until I put it on my rulers and what a difference it made. No more pushing so hard on the ruler to keep it in place. Here is how you add it to your rulers.
Unroll Invisi-Grip onto your rotary cutting mat with Invisi-Grip facing up.
Position ruler over Invisi-Grip and rotary cut approximately 1/4 inch smaller than the size of your ruler.
Peel off paper backing and apply to the under side of your ruler.
Press out any wrinkles and whalla.......you have a ruler that will grip the fabric better.
I really like it and it does help quite a bit. Saves on the muscle power that is for sure. :)