Yesterday I saw a really neat tutorial showing the Fusible Thread and it worked really neat. I haven't used it yet but am going to purchase some this week to do some appliques's on the tablerunners I am working on. You might check out the tute and see if maybe you would like to try that. I liked the fact that you can separate the bottom to cut it away which takes away the stiffness and bulk. I think it would work really good on circles. Check out the tute. In other times I have used lightweight fusible either wonder under or the other stuff that I call the bumpy stuff for lack of the correct terminology (mind not working today.) Hope this made sense to you.