I use all mine up to make rag quilts and it works really well. You can easily sew pieces together (I use the multiple zig zag stitch). When you are going to sew pieces together, lay them one atop another, cut with your rotary cutter, remove the scrap edges, then sew the sides which now match. It works well and since the squares for a rag quilt are generally not that large, the fact that you have pieced the batting is not a factor.