I make Cal King quilts 10x10 feet. They hang over on a Cal King bed and some of my kids use a 10x10 feet quilt on their double bed and another a large queen sized quilt on their double bed. I wash my quilts in an energy efficient machine, front load, and have no problems washing them. I have an Innova 26 inch on a 12 foot frame and have no problems quilting it. I have done several 10x10 feet quilts on my Janome 6500, sit down 9 inch opening, it is not my favorite way to do it but it is definitely doable.