You know, I have a Fiscar mat and 45mm rotary cutter, I have had it for about 15 years, I have to press very hard and it skips no matter what I do. I haven't used it a lot in the 15 years. I wonder if the mat gets old and becomes unusable??
I see the rotary cutters used on utube and other videos and theirs seems to works so easily- nothing like mine, I replaces the blade and everything nothing helps.