We used the tri-rec ruler/tool during a weekend quilt camp. The final product was a variation of "Storm at Sea" which came out beautifully. The true "trick" to this tool is cutting the little notches accurately. The pieces will match wonderfully, and there is no paper piecing. By the way, the finished quilt is now at the long-armer's, and it will be one of the ones which I will keep for myself. My wife even liked it!