Stress and strain are often necessary to achieve great things. The stress is the force applied to a material, the strain the way that material responds. If too much stress is applied too quickly, or the material is too brittle, the material may snap and break immediately. But if there is Insufficient stress then it will not deform at all. But a steadily applied force, of just the right level, applied over a sufficiently long period of time may completely change the nature of the material, putting it into shapes it was previously unable to achieve. Permanently deformed, particularly forms will become a part of it’s nature, it will readily return to them with a little prompting. It may be more flexible than before, more robust, less brittle, more adaptable, less strained by other stresses it encounters.
The deforming process is also an ideal time to an one’s signature, or stamp, to the material - which may be done in visible, or entirely hidden but deeply placed, way.