I have always had a washing machine with an extra large tub. First it was because of lots of diapers and kids' clothes, and now it's because of quilting. I can wash any size quilt at home and dry it in the dryer. As far as your question, though, I don't think you will get the same effect unless you thoroughly wet the quilt. Some of the wrinkled effect, if not all, is due to shrinkage of the batting.