Every quilt I do I NEVER prewash the fabric or batting and starch it like there is no tomorrow! :mrgreen: I also have never tried spray basting but on this king size I am working on, but spray basting is really looking good.
But if I ever have any puckers in my backing (which is often :mrgreen: ) they are easily hidden when I wash it for the first time. Since I make and quilt all of my quilts on a treadle I like the vintage look it gives when the fabric and the batting shrink at different rates. And I wash my quilts on warm/cold so it helps with the shrinking/vintage look.
So if you have a quilt that puckers in the back or front just keep a treadle in your home. If someone ask why its puckered just point at the treadle! :lol: :lol: :lol:
Billy