Ive an antique Austrian cow bell here thats made this way, tho the
coating is brass.
Looking at the surface its obvious that the brass has been fused to
the iron sheet AFTER its been bent up and riveted.
Bells on bovine and other stock have been used since the earliest of
times, for identification and finding them in mist and fog in the
alpine regions of Europe and elsewhere in on the African continent.
Im fairly certain how it was done, given the level of technology of
the metal smiths who made the bells, wether for 4 legged or 2 legged
Given that the Edinburgh researchers are on substantial salaries,
they should really work it out for themselves.
My guess is that they are academics who havnt much hands on
Tho Id be happy to act as a consultant for my usual fee.