Well now, I thought that I had all the sewing machines that I "needed" but this makes me realize that I absolutely need one of these ASAP. I think that the thread companies would make more money if we all used these machines 'cause we couldn't use the big cones then, could we? Those spools go for a lot more per yard of thread than the cones. Or am I not understanding something about the use of the spools in the can part?