I'm astounded at all the Olfa lovers. I can't stand them because of their smell! I bought one once and laid it flat under my couch to store it. I forgot about it, and both my husband and I started to smell something like a skunk and thought maybe someone had run over one. It turned out to be the Olfa. I had to return it. PEE-EEWW! I have a green Omnigrid that doesn't smell and it works really well with all my Omnigrid rulers.