Mafi yawa ana ƙirƙira rivets mara kyau don kera ko gyara kayan ɗora.Ba a fayyace sosai lokacin da aka ƙirƙiro ɓangarorin ɓangarorin ba.Amma an ƙirƙira kayan masarufi ne a ƙarni na 9 ko na 10 AD ƙwararrun ƙwararrun ƴancin bayi daga aiki mai nauyi kamar takalmi na ƙusa.
Lokacin aikawa: Satumba-22-2021