I'm another who does not pre wash. Until a couple of years ago, I serged the cut ends of my fabric and washed it. Then I started using lots of jelly rolls, layer cakes, and charm squares. Those, I did not pre wash, so I just stopped pre washing altogether. I like to work with very stiff fabric so I heavily spray fabric and precuts with a mixture of 2/3 Sta Flo 1/3 water. After starching, I put the fabric in a zip lock plastic bag which I keep in the freezer until I get around to ironing. This works for me. When I wash the quilt, I use color catchers.