I do not like the sandwiching on a twin size or larger. I have tried pinning and spray basting and don't like either one. I love the handwork of sewing on the binding. I would like for someone out there to describe how they use the spray baste, what type you use and how you go about it. Even if you spray baste, you still have to crawl around on the floor. Even then, I still couldn't get it smooth on the back, so I went back to the pinning.