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Angora fibre
A very fine, fluffy animal-hair fibre from Angora rabbits, prized for softness and warmth but weak alone, usually blended with wool or nylon.
advanced · Natural fibres
Armhole taping
Stitching stay tape around an armhole seam in a tailored jacket to prevent the armhole from stretching during construction and wear.
advanced · Tailoring
Bagging out
A technique for constructing and turning a fully lined garment, such as a jacket, right side out through a small opening so all raw edges end up enclosed.
advanced · Linings & interfacing
Bar tack machine
An industrial machine that sews a small, dense block of zigzag stitches to reinforce stress points such as pocket corners and belt loops.
advanced · Industrial machines
Barthélemy Thimonnier
French tailor who patented an early chainstitch sewing machine in 1830 to make army uniforms; rioting tailors, fearing job losses, destroyed his workshop in 1831.
advanced · Sewing technology history
Besom pocket
An inset pocket finished with two narrow folded strips forming lips on either side of a slit opening, commonly used on tailored jackets and trousers.
advanced · Pockets
Bias cut
A cutting technique in which pattern pieces are placed at a 45-degree angle to the fabric's grainline, producing extra drape, stretch, and a fluid hang.
advanced · Layout & cutting
Bishop sleeve
A long sleeve that is full through the forearm and gathered into a fitted cuff at the wrist, historically associated with clerical and Victorian dress.
advanced · Sleeve types
Blazer
A tailored jacket, single- or double-breasted, structured with shoulder padding and often lapels, worn as smart separates rather than part of a matched suit.
advanced · Outerwear & tailoring
Block
A basic pattern shape, drafted to fit a specific set of body measurements without seam allowances or design details, used as the foundation for other patterns; called a sloper in American usage.
advanced · Pattern terms
Blocking (fabric)
Dampening or steaming a piece, especially a knit, and pinning it to dry in a set shape and dimension to correct distortion before or after construction.
advanced · Care & preparation
Bobbin case tension screw loose
Bobbin thread that pulls with no resistance, causing loopy stitches, usually means the small screw on the bobbin case has loosened. Turn it slightly clockwise and test on scrap before sewing the garment.
advanced · Machine problems
Boiled wool
A knitted or woven wool fabric that has been felted through heat, moisture and agitation, producing a dense, non-fraying fabric that needs no seam finishing.
advanced · Knit fabrics
Boning
Rigid or semi-rigid strips, historically whalebone and now plastic or steel, inserted into channels within a bodice to maintain a fitted, structured shape.
advanced · Couture
Boning (corsetry)
Rigid or semi-rigid strips, of steel, plastic or historically whalebone, inserted into channels to shape and support structured garments such as corsets and strapless bodices.
advanced · Fastenings & hardware
Boro (textile)
A Japanese tradition of patching and mending indigo cotton textiles with layered scraps, born of necessity among rural families from the Edo period into the 20th century and later admired as folk art.
advanced · World sewing traditions
Bound buttonhole
A buttonhole finished with folded fabric strips, or lips, instead of thread, giving a tailored, couture-quality opening usually made before the garment is fully assembled.
advanced · Closures
Bra
An undergarment designed to support and shape the bust, typically constructed with cups, a band, and shoulder straps.
advanced · Lingerie & swimwear
Bridle stitch
A line of hand or machine stitching that secures twill tape along a jacket's roll line and front edge, controlling stretch and maintaining shape during tailoring.
advanced · Tailoring
Bubble skirt
A skirt with an outer layer gathered at the waist and again at the hem into a lining, creating a rounded, puffed silhouette.
advanced · Skirts
Buckram
A very stiff, heavily sized woven or non-woven fabric used to add rigid structure, notably in hat brims, belts and structured bag panels.
advanced · Interfacing & stabilisers
Bustier
A fitted, often boned bodice-length undergarment or top that shapes the torso from bust to waist, typically worn without a separate bra.
advanced · Lingerie & swimwear
Buttonhole machine (industrial)
A dedicated industrial machine that automatically cuts and stitches buttonholes at high speed with consistent quality for mass garment production.
advanced · Industrial machines
Canvas construction (tailoring)
A jacket-making method in which a layer of horsehair or wool canvas is hand- or machine-stitched inside the front panels to shape the chest, distinct from cheaper fused interfacing.
advanced · Tailoring traditions
Chain stitch (coverstitch)
A looped stitch formed by a single needle thread interlocking with a looper thread in a chain-like pattern beneath the fabric, used alone or alongside cover stitching.
advanced · Overlockers & coverstitch
Chesterfield coat
A tailored overcoat with a velvet collar, concealed button closure, and minimal waist shaping, originating in 19th-century English menswear.
advanced · Outerwear & tailoring
Chiffon
A sheer, lightweight plain-weave fabric made from tightly twisted crepe yarns, giving it a slightly rough, airy hand; slippery and prone to fraying when sewn.
advanced · Woven fabrics
China silk
An older term for a very lightweight, smooth plain-weave silk lining fabric similar to habotai, now less common due to its delicacy.
advanced · Linings
Clutch motor
An industrial sewing machine motor that runs continuously, engaging the machine via a friction clutch pedal, resulting in a distinctive momentum on start and stop.
advanced · Industrial machines
CMT
Short for 'cut, make, trim,' a manufacturing arrangement in which a factory cuts and sews garments from fabric and materials the client already supplies.
advanced · Industry & business terms
Collar that won't lie flat
A collar that rolls or buckles instead of sitting smoothly comes from insufficient understitching, poorly graded seam allowance, or interfacing too stiff or too soft. Grade the allowances and match interfacing weight to the fabric.
advanced · Fit & construction problems
Contour dart
A dart that curves inward at the middle and points at both ends, shaping fabric closely to the body at the waist without a horizontal seam.
advanced · Shaping (darts, gathers, pleats, tucks)
Contour waistband
A shaped, curved waistband cut to follow the body's natural waist curve rather than a straight strip, giving a closer fit without a separate casing.
advanced · Waistbands & elastic
Copying ready-to-wear
The practice of drafting or tracing a sewing pattern directly from an existing ready-to-wear garment, used to reproduce or reverse-engineer its fit and construction.
advanced · Pattern formats & sources
Corset
A close-fitting, boned undergarment or outer garment that shapes and supports the torso, traditionally laced or hooked to control the waist and bust.
advanced · Lingerie & swimwear
Costume pattern drafting
Process of drafting or adapting patterns for fantasy, sci-fi, or stylised character costumes, often exaggerating proportions or silhouettes beyond conventional garment fit.
advanced · Costume & cosplay
Couching
A technique in which a decorative thread or cord is laid on the fabric surface and secured in place with small stitches worked over it.
advanced · Topstitching & decorative
Coverstitch skipping
Skipped stitches on a coverstitch hem, especially at the seam start, usually come from an unstabilized layer or fabric not feeding evenly under both needles. Use a stabilizer strip and start on a fabric leader.
advanced · Stitch & thread problems
Cross back measurement
The width measured straight across the upper back from one armhole seam to the other, used to check the fit of a garment's shoulders and back.
advanced · Measurement terms
Crotch curve
The curved seam line of a trouser pattern that shapes the crotch area between the front and back leg pieces, critical to comfort and the elimination of crotch wrinkles.
advanced · Drafting skirts & trousers