Okay, my sister decided she likes the Twister design for a pair of quilts for her soon-to-be-grandson twins. We've also picked fabrics (blue, green, purple batiks with cream borders-- YUMMY). Now, for size, I want to make 45x60" quilts. I've purchased the 5" lil twister tool, so I will be cutting 5" squares (resulting in, I believe, 4.5" squares once all sewn together-- I"M NOT SURE ABOUT THAT). If I've calculated correctly, I need a 9x12 square design (there will be 2.5" border all the way around from an originating 3" strip). Here's how I got there:

45" wide. Subtract 5" for the 2.5" borders on each side. Balance: 40" divided by 4.5" finished squares = (rounded up) 9 squares across.

60" long. Subtract 5" for the 2.5" borders on each side. Balance: 55" divided by 4.5" finished squares = (rounded down) 12 squares down.

Is this accurate? I.e., can someone check my math or my assumptions?

Thanks!

-- Jillaine