Sketches pertaining to Jewelry making

Niobium anodizing setup

1917 book on jewelry making

Cobra Chain patent
1,726,700---In a bracelet,necklace,or the like, a single length of extendible flexible tubing comprising a plurality of oppositely disposed helical channel sections,the side walls of each channel section being inter locked in the space between the side walls of the other channel section,said tubing being helically wound about itself to form a plurality of intertwined strands of circular form, the ends of the tubing being secured together. WILLIAM FORSTNER.

Some "Cobra" examples

Some Millard Wire flatstock jobs circa 1975-80