
A self-healing mat is designed to recover from endless cutting on its surface, but it does not recover from improper storage I learned. I was keeping it under my bed on top of some sweater boxes which were not completely flat on top. I hadn't used the mat for a few months. When I pulled it out I found that it was no longer flat. The bumpiness makes cutting on it difficult and its ruler grids have become worthless. I keep it out on the floor now. I left it covered with heavy books for a week and that did nothing. Maybe I'll try a warm iron.
Crooky loves to sit on it. Dogs are so predictable this way. Anything at all that differentiates one section of floor from the rest of it becomes a target for them. They simply cannot resist sitting on it, whether it's a piece of cardboard, a towel, a sweater, or an oil painting.








