I just read this on the Quilters World Magazine Facebook page ....Tip: Pre-washing fabrics before piecing a quilt top can make accurate blocks more difficult; unwashed fabric contains stiffeners that make piecing easier. Instead of pre-washing to reduce the chance of dye bleeding, just steam iron the fabrics instead. This will help to set the colors, while leaving the fabric stiffer and easier to work with.
This is 1 magazine I do sub too and enjoy.