Lance field guide · Curve selection

French curve or hip curve? Follow the line you need.

Drawing-method illustrations. Follow your pattern’s measurements, draw in pencil and test garment fit before cutting final fabric.

See a priced starting selection

At the pattern table: choose the curve that fits the line

Mark the points specified by your pattern, then use the ruler to connect them.

French curve: a shorter curved transition

Three marked points connected by a short smooth pattern curveMarked pointsTrace a smooth joining segment
  1. Plot the points required by your pattern instructions—for example, on an armhole or neckline.
  2. Rotate the French curve until a section of its edge follows neighboring points and the intended direction of the line.
  3. Draw that section lightly. Reposition with an overlap, then check that the joins are smooth before finalizing.
Aluminum French Curve Ruler — 32cm (Metric) · $8.50 →

Hip curve: a longer, gentler contour

A long gradual pattern side-seam curve through waist and hip reference pointsWaist referenceHip reference
  1. Mark the waist, hip and other reference points specified by your pattern.
  2. Position a gentle section of the hip curve along the intended side-seam contour. Match the marked points without forcing an abrupt bend.
  3. Trace in pencil and check the transition into the adjoining straight or curved seam. Test garment fit before cutting final fabric.
Aluminum Hip Curve Ruler — 24" (Inch) · $12.50 →

Illustrations show the drawing method. Follow your pattern measurements and draw in pencil.