Bernina #37D Patchwork Foot
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Because it's designed for straight-stitching, Patchwork foot # 37D is ideal for sewing 1/4 or 1/8 (approx. 3 or 6 mm) seam allowances.In addition, Patchwork foot # 37D features three evenly spaced markings (1/4 apart) on its side that make the square insertion of pieces in patchworking easier. A narrow groove under the flat sole serves as a thread channel for smoother piecing.