ROFL at the mat lines. I have a mat that is so old, how old is it you ask??? 1986??? I have cut right through the mat. But I rescued the bits and pieces and just cut the one into four parts. Not one to waste huh?? Could not for the life of me understand why my cuts just weren't. Hmmmmm Why I saved the parts is beyond me. I do have new mats. Oh well. Continuing on with the sewing now.