How can copper stranded wire be softened?

The method to reduce the softening of copper stranded wire is as follows.

1. Clamp one end of the copper stranded wire with pliers, stretch it in the length direction for a few seconds, then release the pliers and repeat this process for many times until the copper stranded wire becomes soft.

2. Soak the copper stranded wire in warm water for about 10- 15 minutes, then bend and stretch it gently by hand to make it loose and soft.

3. Wrap the copper stranded wire with a clean towel or cloth, then heat the surface of the cloth with an iron for a few seconds, and then gently bend and stretch the copper stranded wire by hand to make it loose and soft.