Originally Posted by Craftygirl
I'm puzzled about this. Unless you have an extral reel of thread in the same colour, wouldn't you have to unthread your sewing machine anyway to get the reel off to put on the sidewinder. Or am I missing the point completely.
I buy more than one spool of thread for a project. But my backs are always a different color and usually a solid so the thread in the bobbin matches my backs. I like to buy those extra wide fabrics for my backs for larger quilts and they are usually something that reads as a solid. It's really handy to not have to unthread your machine to wind a bobbin.