The object in darning is to repair a rent, if possible, so that it cannot be perceived. The warp and woof threads that have been worn away are to be rewoven into the cloth. No knots are needed. Leave a short end of thread to be clipped when the darn is finished.
Stockings should be darned on the wrong side. A square hole makes a more symmetrical darn than a round one, and should be used wherever there is no widening or narrowing in the knitting, as on the leg of a stocking. A round hole is better for the heel and toe. Cut away the part that is badly worn. First put in the warp threads, taking care to take up on the needle all the little loops around the hole and making the darn symmetrical in shape. Then put in the woof threads, weaving carefully across the warp over the hole, passing over the threads that were taken up on the preceding row. Give special attention to the edge of the hole, passing first over and then under the edge, that there may be no ridge. If the hole is large or stretched out of shape, draw up the edges by whipping with fine thread. The darning stitches should extend only as far as the worn part. If the warp threads have strengthened the worn part sufficiently the woof threads may be extended only far enough over the edge to fasten securely. In darning a large hole it is sometimes wise to begin putting in the warp threads at the center first to prevent stretching. Do not draw the threads too tight, as they will shrink when washed.
This may be done with thread, ravelings or hair. In darning with thread darn on the wrong side, with ravelings or hair on the right. Darn at right angles to the tear or cut. Continue the darning stitches on each side of the tear only far enough to strengthen the worn part, usually a quarter, sometimes an eighth of an inch, is sufficient. Continue the darn an eighth of an inch beyond the end of the tear. The repairing shows less if the rows of darning stitches are of unequal length. In darning take up the threads of cloth passed over in the preceding row, slipping the needle over one edge of the tear and under the other going one way and reversing this order going the other way. This makes the edge smooth and does not throw it up in a ridge. If the material to be darned is thin or stretches easily, place the rent over a piece of glazed paper and baste around it before darning. If the cloth is worn and thin, place a piece of cloth under and darn through the two thicknesses. Take great care not to stretch the hole or to draw the threads tight enough to pucker.