citruscountyquilter

I have this ruler (Creative Grids) and have made several quilts with it. I will say that it is not the most intuitive to use but once you get the hang of it it goes along fine. The key to using the ruler is to line up your center square with the square on the ruler. There is a different square to line up depending on the round you are on. If you google creative grids curvy log cabin tutorials it will take you to the Creative Grids page and the video tutorials.
Basically you start with your center square and in the upper right hand corner of the ruler there is a square with rough holes in it. Place this over your center square and mark the four corners. This will get you started right to have the correct seam allowance. Once you've done this sew two wide strips along the top and side and two narrow strips along the other two sides. You don't have to be concerned at this point as to how edges line up as you will trim those away with the ruler. Just make sure you have your stitching line going through the dots you made on your center square. This will assure you that your center square is the correct size. Now take your ruler with the wide strips across the top and down the right side and place the square on the ruler that is labeled "Wide Round 1". Line up the square and trim off the two wide strips you have. Next flip the square around and the ruler around and line up the square that is labeled "Narrow Round 1" with your center square. Trim the edge along the top and right side of your square. Now you are ready to do round 2. Do the same by sewing on two wide strips to the wide strips and two narrow strips to the narrow strips. Go to your ruler and line up your center square with the square that is labeled "Wide Round 2" and trim. Turn your block around so the narrow strips are along the right and top, line up your center square on your block with the square on your ruler that is labeled "Narrow Round 2". Do the same for round 3. The dotted lines on the ruler should line up with your seams in each round. Hope this helps.
How your arrange your blocks will determine how your finished quilt will look like. There are a number of patterns that are available using this ruler. Here are two quilts that I have made.