[vasco]

Electric cables at very easy to make in metal, in fact I'd wager 90%+ at least are made of copper in the whole world.

[yetihehe]

Electric cables are made from insulation (plastic) and wires (metal). Wires use metal, insulation typically does not, so it's NOT easy to make a whole cable out of metal.

[dog436zkj3p7]

Have you heard of insulation?

[vasco]

If I say humans are made of polyester you wouldn't correct me? You usually meet them wearing insulation too.

[pm3003]

Silicon ?

[0xffff2]

Do you mean silicon or silicone? The former isn't a very good candidate for flexible cable insulation. The later is a form of plastic.