Wahe Guru Ji Ki Ka Khalsa, wahe Guru Ji Ki Fateh Greetings, everyone, I have a question. There are now different designs of the kara; I have seen some that are ridge, some that are smooth, and I have been wondering how the different forms of karas have come about. A friend gave me one that is made of iron rebar; he had bent it into a bangle shape and welded the ends together. Another friend took a lock washer made of steel and welded the ends together, so they are permanently connected, though they do not quite match up and so are just a bit offset. Does anyone know where to find information about the different types and shapes of the kara, and how they came about? Thanks!