If any mechanical damage is sustained, such as a cut or burn or any other kind of it, the damage should be dealt with as soon as possible by a component expert, because such lesions get worse very quickly.
In ordinary use, quite apart from accidents, the ends and sides often tend to wear and fray, in which case the damage should be repaired. Places in the middle of the carpet that are locally worn or damaged can have new knots inserted, and even large holes can be restored to make the rug almost as good as new, though such work is rather expensive. In carpets of less value, instead of new knotting, patches cut from a suitable run can often be inserted at less cost, and sometimes as serviceable small rug can be made from a larger worn one by cutting away the bad parts.
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