Originally Posted by
Prism99
I went to the hardware store and bought a metal T-square. You can get really big ones in the lumberyard area, but I settled for one that is about 2'x3'. I think it was $12.
Just be careful you have a large enough surface when you use it. The quilt can slip and slide underneath the T-square. You want to position the quilt corner as flat as possible before placing the T-square on top of it.