Piecing backs - direction of fabric - sag on one side - Why?
For years I have tried to explain to my quilting customers that they should piece the backs for their quilts as if the fabric had a definite up and down pattern. When they don't the fabric will sag on one side when loaded on my quilting machine while the other side is perfectly straight. Further down the back the sag and straight change places. I'm sure this has something to do with the weave of fabric or something but I don't know exactly why. If anyone knows, I would be so happy to be able to explain it to my customers and then maybe they will do it the correct way if they understand why.