Wow, I'm still confused abt washing material first. My sister in law owns a quilt shop and she has never washed her material first and has had no bleeds... maybe just lucky. Before i was really aware of quilt shops I bought abt 100 yards of material at Jo Ann's pre washed and ironed all of it and had no bleeds, also used white vinegar. I'm now getting ready to sew a purple and white quilt, did not first wash, Hope I didn't goof.