Weft ikat uses resist-dyeing for the weft yarns. Such yarns are typically used as weft yarns with a cotton warp. Pile, warp and weft yarns are excellently balanced. Poplin traditionally consisted of a silk warp with a weft of worsted yarn. Gabardine always has many more warp than weft yarns. A weaving mill needed yarn suitable for the warp and the weft. Modern serges are made with worsted warp and a woollen weft. Fibre fabrics are web-form fabric reinforcing material that has both warp and weft directions. Ikat is a method of tie-dyeing the warp or weft before the cloth is woven. Dupioni is often woven with differing colors of threads scattered through the warp and weft. The carcass is often a woven or metal fabric having a warp & weft. Each thread in the warp crosses each thread in the weft at right angles. The weft is generally coarser than the warp. Modern industrial looms can weave at 2,000 weft insertions per minute. Warps, weft and pile are constantly kept wet during the weaving process.