no, it was made of rings of polythene (I think) plumbing pipe, which were then split. they just twisted the ring so the split opened, linked as needed, then let

no, it was made of rings of polythene (I think) plumbing pipe, which were then split. they just twisted the ring so the split opened, linked as needed, then let the twist go. Then metal coated everything. The people doing it wore their fingerprints away over the years (literally) they were doing this