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[EOR]
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No, maybe yes, but mostly no. Bending any wire too far reduces its lifespan, but for a chord like that which is bent beyond where it is supposed to anyway with normal use and more tightly than this, winding it like this may increase the lifespan. Heating it won't have much affect on it, unless you go bananas and melt the insulation/soldier off which is pretty hard with a hair dryer. I'm talking about baking it for 10 minutes at 400F or something like that.

Source: Electrical engineer
[EOC]
