don't pre wash. I got bugs, fabric bleeds and uneven shrinkage the first two quilts I made. And THANKYOU! now i know that the spitting headache and tiredness weren't stress and a touch of the flu.
Now I always prewash using either salt or vinegar depending to set the color and use the dryer for bugs. but i make good everyday quilts my stuff is meant to be used to death. and I do!