I use the batting seam tape. Right now I have a number of pieces pieced together in various sizes. I'm quilting smaller projects on the frame using up all these smaller pieced battings using one large muslin backing. Just keep adding the batting when I run out, rolling the muslin along, adding the next project. Great way to clear off my rod I keep all projects waiting to be quilted. I'm also quilting fabrics for various future projects such as dining table chair seats, toilet seat covers, etc.