There are special tools for darning socks or stockings: • A
darning egg is an egg-shaped tool, made of stone,
porcelain, wood, or similar hard material, which is inserted into the toe or heel of the sock to hold it in the proper shape and provide a foundation for repairs. A shell of the tiger cowry
Cypraea tigris, a popular ornament in Europe and elsewhere, was also sometimes used as a ready-made darning egg. • A
darning mushroom is a mushroom-shaped tool usually made of wood. The sock is stretched over the curved top of the mushroom, and gathered tightly around the stalk to hold it in place for darning. • A
darning gourd is a hollow dried
gourd with a pronounced neck. The sock can be stretched over the full end of the gourd and held in place around the neck for darning. Specialty tools aside, anything that is round that can stretch and secure the fabric is also effective. Other examples include lacrosse balls, light bulbs, and lemons. • A
darning needle is typically as blunt-tipped as possible, to avoid splitting the threads as it is passed through the item being repaired. This is especially true of larger needles for darning coarse knitted cloth. s and a darning needle. • A
darning loom is a very small hand-held loom for weaving patches into the original cloth. They have an egg portion which goes inside the cloth and is grooved; the rest of the loom goes on the outside, and the two parts are held together by an elastic band. The loom is warped and woven upon with a needle, which also serves as a
beater batten. Darning looms typically have heddles made of flip-flopping rotating hooks, which raise and lower the warp, creating
sheds to make weaving the patch easier. The hooks, when vertical, have the weft threads looped around them horizontally. If the hooks are flopped over one side or the other, the loop of weft twists, raising one or the other side of the loop, which creates the
shed and countershed. The spacing of the hooks generally doesn't match the
threadcount of the cloth. Other devices sold as darning looms are just a darning egg and a separate comb-like piece with teeth to hook the warp over; these are used for repairing knitted garments and are like a linear
knitting spool. Darning looms were sold during
World War Two clothing rationing in the United Kingdom and in Canada, and some are homemade. ==Pattern darning==