i cked, one blade, I flipped the mat because it wasn't cutting on the lt green side, so i flipped to the yellow side, hoping for a better cut. My dh suggested getting a new one, this one is about 32 yrs old. the cutter not the blade. He says he thinks i got my money's worth out of it. it's like underwear, you hate spending on money things people can't see, like a cutter, but you need it. I may just break down and buy a new cutter. while i'm at it, buy some new blades. an expense i can't afford right now, but i want to get this quilt going so i can figure out the scallops. Oh well....