Wire Dude Cont'd

Coating the wire will not make it less brittle. I think the best is pure copper bus wire as it is soft. Alloys (or mixtures) tend to be harder and thus get brittle easier. But I wouldn't worry. When it gets brittle just unroll some more and rebuild the little guy.
 
Thanks Rick! So the pure copper wire, will it eventually harden/become brittle and break?
 

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