Lots of info here... have fun! Don't buy a larger mat than you have space for. The rotating ones are fun, but not as serviceable (IMHO) as the OLFA mats 18 x 24 minimum size. I have the 24 x 36 and it fits great on the kitchen counters.... my friend has one so large it doesn't fit any place except the dining room table... not a bad thing if you can cut at that height...