Originally Posted by Rainbow
Aside for "a lot"....how much background material do you but for a twin, double, queen and king quilt??
It depends on the size of your finished blocks since smaller blocks will take more material. But assuming a 4" finished size block and a twin size of 60" x 80", the math works out like this:
60" quilt width / 4" block size = 15 block width
80" quilt length / 4" block size = 20 block length
15 block width x 20 block length = 300 blocks
Using an 8.75" raw block size to make those 4" blocks, you can get 5 blocks from a single cut width of fabric (WOF).
300 blocks / 5 per WOF strip = 60 WOF strips needed
60 WOF strips * 8.75" each = 525 linear inches of fabric needed
525" of fabric / 36" per yard = 14.58 yards of fabric
So about 15 yards of background fabric for a twin size quilt.