I want to make a quilt with the ten degree ruler that is a large quarter circle with the blades pieced similar to a Spicy Spiral table runner. The pattern calls for it to be pinned on the black background and stitched down. I want to do a huge curved seam. Am I correct in thinking I can just pin the quarter circle on the background and mark the edge, remove it and add 1/2" for a seam and then sew them together. I have much experience setting in garment sleeves and don't anticipate any problem with the sewing. Is the 1/2" correct? I may change my black as I have Michael Miller's Fairy Frost and I found it a little difficult to ease if needed with that finish on it.
