I wash large pieces such as 3 yards of 108" wide backings and just this morning washed a piece that was 6 yards by 42 inches. I wash the fabric in warm water and then take it out of the washer after the machine is done. Shake out the fabric in the dryer, put in 6 woolzie balls and put the dryer on low, set my oven for 10 minutes (makes sure I don't forget the fabric) and go in and take out the fabric. Shake it and hang it on the clothes line in the basement. Most of the wrinkles hang out and when i am ready to use the fabric, I iron/starch as much as I need. That is it. I wash all my fabrics. I even put the charms, fat quarters, layer cakes and the 2 1/2" strips in a lingerie bags and wash them, too.