Grrr, I am so frustrated! Today I discovered that the measurements on my mat are not the same as my ruler. I always cut with the rulers, but use the mat to make sure my blocks are coming out at 12.5 inches. Looks like I am going to have to rip and restitch some of the blocks I made because they are too small. I hope the blocks I sent out in the last boom were not too small to be used. This "redoing" was not included on my timeline!