When I first starting cutting with my Pazzles Inspiration, I cut right through the mat! Imagine the horror! I was thinking about cutting on my Cricut Expressions I guess. I had never cut through a mat with my E. Well I am here to tell you that the Pazzles Inspiration has a LOT more cutting force than the E.
To avoid cutting through your mat, always start with a blade pressure of 1.5 and a pressure of like 13-18 for test cuts. Trust me, you will save mats this way. I learned the hard way to start low and work my way up. My first mat was rendered unusable the first day!
Also, even now, when I change to a new blade, I take that blade length back down to 1.5 and do test cuts until I get the right combination of blade length and pressure. Also, when I am changing pressure, I increase it by 2 numbers until I get the cut I want. If I had practiced this from the start, I could have saved LOTS of paper. I have wasted so much paper it is downright criminal.
Anyway, I hope this post will help you in not wasting paper and not shredding your Pazzles mats.