Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 30cm ( 12 inch) 22 gauge ( wire diameter 0.6mm ) : 25cm ( 10 inch) ...

How to calculate wire size and length in making rings - selected wire size depends on the motifs of the ring. - small motifs ...

The Oura Ring 4 is the most impressive smart ring out there, offering excellent analytics and a stylish design.