I am working on a pattern called Rainforest Rings, by Lisa Moore of Quilts With a Twist. We have been corresponding about some of her patterns and the best way to get good resuts when working on curves. She has suggested I use this fabric fold pen by Clover, she says it is great. I am getting one tomorrow at JoAnns. Just wonder if any of you had ever used one, it sounds great, especially if your are working on curves of any kind.