Not sure if another member has already posted this but I've found the only way I can put a sandwich together is on a large bed which I cover with about 3 yards of the heaviest vinyl Walmart sells. It is pretty wide and the sandwich slips around to come to me as I spray and/or pin baste it. I use my rolling office chair instead of my wheelchair to get around the sandwich when I need to. For me, this works well and the spray (used sparingly) does not coat the floor or bed.