I make changing pads as my "practice sandwiches" and zig-zag multiple pieces together. Granted, I do quilt quite close together on those, but even after LOTS of washing in warm water & med-high heat in dryer, I've never seen any issues whatsoever.[/QUOTE]
Good idea to make these changing pads as samples.
I have a stitch on my Husavarna that is called a bridging stitch, which I use. It is simular to a zigzag, but the needle goes down an extra time in the middle of the zig and zag.