Hi Sue.....I also had a June Taylor ruler that was gouged by my rotary cutter. This is the only kind of ruler that I have had problems with so I contacted June Taylor and asked why. I stated that this is what a ruler is for and should not be gouged by a cutter. They apologized and sent me a new ruler. I felt as if the ruler was too flimsy. I don't have that problem with an Olfa.
Happy quilting,
Sue