Plain, Twill, Satin: The Three Weaves Everything Is Made From

Pull on any woven cloth in this catalogue, from a denim jacket to a satin gown, and underneath the color and the pattern you will find one of just three ways of crossing thread. Weaving has many flourishes, but it has only three foundational structures: plain, twill, and satin. Everything else is a variation on how often, and where, the lengthwise warp threads cross the crosswise weft. Learn those three and you can read almost any cloth.

Plain weave: over one, under one

The plain weave is the simplest interlacing there is: each weft thread goes over one warp, under the next, over the next, like a woven basket. Because the threads cross at every single opportunity, the cloth is tightly locked, strong, hard-wearing, and the same on both faces. It is the structure of muslin, poplin, chambray, taffeta, and organza, and it is the canvas on which most checks and stripes, like gingham, are laid. When you want a cloth that is stable, reversible, and honest, you want a plain weave.

Twill: the diagonal

Twill lets each weft thread float over two or more warps before going under, and steps that float sideways by one thread each row. Those staggered floats line up into the diagonal ridge, the wale, that you can see running across denim, gabardine, serge, and tweed. The diagonal does real work: it makes the cloth more flexible and better at hiding dirt than a plain weave, which is why twill dominates trousers and workwear. And because the diagonal can be reversed and recolored, twill is the parent of a whole family of patterns, herringbone, houndstooth, and the pointed chevron among them.

Satin: the long float

The satin weave goes the other way from plain: it crosses as rarely as possible, letting each thread float over four or more before tucking under once, and scattering those tuck points so no diagonal forms. With almost the whole surface made of smooth uninterrupted floats, satin reflects light in a single sheet, which is the source of its liquid luster. The price of that shine is fragility: the long floats snag and the cloth is weaker. Woven in filament silk or its imitators it is satin; woven weft-faced in cotton it is sateen. Either way it is the cloth of eveningwear and linings, beautiful and a little delicate.

Three structures, the whole grammar

Nearly everything else is a variation on these three. Double the plain weave's threads and you get the basket weave of hopsack and oxford cloth. Run a computer-controlled loom and you can mix all three within one cloth to weave a picture, which is jacquard, the engine behind damask and brocade. The countless named patterns, checks, stripes, tartans, houndstooth, are color games played on top of plain and twill structures.

This is why the diagrams in this catalogue are not photographs. Because plain, twill, and satin are rules, not pictures, the pattern engine can build each cloth's render directly from its construction, the same way the loom builds the cloth. Read the three weaves and you are reading the source code of almost everything woven.