Bulky seam allowances
intermediateStub
Lumpy, hard-to-press seams at corners or curves come from leaving full seam allowance width in places that need to fold or turn. Trim, grade, and clip curves to reduce bulk before pressing.
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Uneven understitching
Understitching that wanders away from the seamline, leaving the facing visible from outside, comes from sewing too fast or not keeping seam allowances pressed toward the facing. Slow down and hold allowances flat as you stitch.
Visible topstitching wobble
Topstitching that wanders off an even line instead of running parallel to the edge usually comes from sewing too fast without a guide. Use the presser foot edge as a guide and slow down on curves.
Curling facings
A facing edge that rolls to the outside instead of staying tucked inside usually means it lacks understitching or the interfacing is too light. Understitch close to the seam and match interfacing weight to the fabric.
Hem rolling on knits
A knit hem that curls up on itself after stitching, refusing to lie flat, is caused by the fabric's stretch and the raw edge's tendency to roll. Stabilize with a twin needle and stay tape, or a coverstitch.
Puckered topstitching
Topstitching that gathers fabric into small folds instead of lying flat comes from tension too tight, a stitch too dense, or sewing bulky layers without a walking foot. Loosen tension and use a walking foot.
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