According to Joe Person of The Athletic, the Panthers called teams up before the draft to gauge potential interest in OLB Jadeveon Clowney.

Soft copper wire : 22 gauge ( wire diameter 0.6mm ) : 20cm ( 8 inch) for snowflakes 28 gauge ( wire diameter 0.3mm ) : 15cm ( ...

You can use any wire you have. Large diameter wire will be more difficult to manipulate, but will increase the rigidity of ...