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Lapped seam
A seam formed by overlapping two folded or finished edges and stitching through both layers, leaving no bulk underneath; used on interfaced or leather pieces.
beginner · Seams
Lazy daisy stitch
Detached chain hand embroidery stitch anchored with a small tacking stitch at the loop's end, commonly grouped in clusters to form petals or leaves.
beginner · Embellishment & surface design
Leggings
Close-fitting, ankle-length trousers made from stretch knit fabric, cut without a fly or structured waistband and typically finished with an elasticated waist.
beginner · Activewear
Lengthen and shorten pattern
A basic pattern alteration performed at printed lengthen-or-shorten lines to change a garment's length in a chosen area without distorting its proportions or seam shapes.
beginner · Fit adjustments
Lengthwise grain
The direction fabric threads run parallel to the selvedge, usually the strongest and least stretchy direction in a woven fabric.
beginner · Fabric & grain terms
Line drawing
A simple black-and-white technical sketch, shown on a pattern envelope or in the instructions, illustrating a garment's design without color or fabric texture.
beginner · Pattern terms
Linen (flax fibre)
A strong, absorbent bast fibre spun from the stems of the flax plant, known for crisp hand, natural lustre and a tendency to wrinkle; sews well but frays readily.
beginner · Natural fibres
Lining
A separate inner layer of fabric that finishes the inside of a garment, hiding seams and construction while adding comfort and reducing friction against the body.
beginner · Linings & interfacing
Lining fabric
A smooth, often lightweight fabric sewn inside a garment to conceal construction, reduce friction against the body, and help the outer fabric hold its shape.
beginner · Linings
Lint brush
A small brush used to clear fabric lint and thread debris from the bobbin case, feed dogs, and tension mechanism during routine cleaning.
beginner · Maintenance & troubleshooting
Lockstitch
The most common machine stitch, formed by an upper needle thread interlocking with a lower bobbin thread inside the fabric; it appears identical on both sides and resists unraveling.
beginner · Sewing technology history
Loopy stitches
Visible loops sitting proud of the seam point to unbalanced tension, most often a bobbin thread with too little resistance. Rethread top and bobbin, adjust tension gradually, and test on scrap first.
beginner · Stitch & thread problems
Loose stitches
Stitches that sit slack and don't lock into the fabric come from top tension set too low. Increase the top tension gradually and test until stitches lock in the middle of the fabric.
beginner · Stitch & thread problems