I use Warm and Natural batting. I save the left over pieces and then I cut the edges straight and butt them together and use the three step zig zag stitch to stitch them together. The three step zig zag is a stitch the looks like a zig zag but has three stitches one way and then three stitches the other way. The edges lay flat without a "ridge" that a regular zigzag leaves. Once the item is quited. you can't tell it it was joined together or not. Why wast good batting?