What finishing decides

A length of wool cloth coming off the loom is not the cloth anyone ordered. It is loose, open, oily from spinning, and noticeably wider than the specification. Everything between that state and the finished piece happens on the finishing floor, and more of the final character is decided there than most buyers expect.

Scouring takes the oil out. Milling — warm water, soap, mechanical action — makes the wool fibres migrate and lock, closing the structure up and shrinking the cloth to its finished width. That is where the handle comes from, and it is irreversible in one direction only: you can always mill a cloth further, and you can never open it back up.

The judgement is fine. Our Ashgrove herringbone is designed to close to 150 centimetres at 480 grams. Take it two minutes further and it hits weight early, the chevron softens, and what was a crisp structural line starts to look like a blur in the surface. Stop short and it handles thin and papery, whatever the ticket says.

This is why the mill weighs and measures a sample off the piece rather than working to a timer, and why the finisher, not the designer, has the last word on when a cloth is done.