Regain: reclaiming width on the loom

To regain something in everyday speech is to recover it, to get back what you had before. You regain your footing after a stumble. You regain trust after it has been broken. The word carries a sense of loss followed by restoration, of returning to a former state.

In textile production, regain is neither loss nor recovery. It is expansion. When woven cloth leaves the loom in a dry state and then absorbs moisture from the air, the fibers swell. Cotton swells more than synthetics; wool swells differently again depending on how it has been treated. This swelling causes the cloth to grow wider. The amount of that growth, measured as a percentage of the loom width, is the regain. A weaver might specify that a cloth will regain 3 percent, meaning a 100-inch reed must be set 97 inches wide to account for the swelling that will happen later.

The term reflects a weaver's perspective: you start with a narrow cloth on the loom, and you regain the intended width once moisture returns to the fibers. The metaphor is not about recovering something lost, but about a cloth that gains back the dimensions you designed it to have. It is anticipatory, built into the initial setup.

Regain matters because it determines the finished product. Set the reed too wide and the cloth will grow wider than specified. Set it too narrow and it will not reach target width. Different fibers, different twist, different finishing treatments all change regain values. A mill's records track these figures for each yarn and each style of cloth, converting abstract fiber properties into concrete loom settings.