Formerly, those who work with bronze Kashyakar It is called. Kashyakar Kansakar, Kasa: Thus it was. Kasas (bronze artisans) heat bronze in a furnace, melt it, and then hammer the yellow-hot bronze on an anvil to create various bronze musical instruments and household items. In Kathmandu, most Kasas live around Janabaha.
Kasa: is a sub-caste within the Uray community, with settlements in Kathmandu's Keltole, Thachen, Duchen, Nhuchen, Kwachen, Takachen, and Talibi areas. Annually on Chakampuhi, they perform the 'pyan thoi' ritual for their ancestors. The oldest historical evidence in the history of the Kasas is the mention of the Samyak performed in Nepal Sambat 690 by Dharmajyoti Kansakar of Tejilipi Kel Janabaha, which is associated with Singh Sarthabahu. They are Buddhists. The primary old guild of the Kasas is the Kasa Thadhan Guthi.