I knew you would all say that and you are right. I would find lots of use for a 12.5 inch ruler so I'll get out to get one soon! I have a Joann's coupon around here somewhere so that will make it hurt less.
I also have a pile of 12.5 inch swap blocks so it won't be a one time use!
The Plexiglas would also be an idea but I'm not sure I would trust the cutters around here!
:-D