The inside core structure and the outside mold had to withstand the pressure of about 30 tons of molten copper, and the casting had to be done in one continuous operation to prevent cracks or flaws.
अवाढव्य आकाराचे व वजनदार घंगाळसागर बनवण्यासाठी खूप कलाकुसरीची गरज होती.