Was wondering...after I have used 505 to baste my quilt and then I cut the extra material off to sew the border...I want to save the extra material to use in a scrappy quilt. I want to wash the scraps to get the 505 out to be able to cut and piece the next quilt. Do I need to hand wash these pieces or is there a way to wash in the machine where I don't have a big tangle of threads from all the cut edges?