You heated up the mold in a bed of hot coals , then filled it with molten lead or pewter , which set into a button shape .
在模具底部用热碳加热，然后注入融化的铅块或者锡块，一颗纽扣便成型了。
The factory made pewter , brass , and low-grade silver jewelry , as well as cheap plastic beads that were painted and lacquered and packaged in zip-lock bags to be sent to hong kong , southeast asia , san francisco , and chicago .
