Step 4: Steel Crucible
We salvaged the nipple by turning it upside down and purchasing a new end cap. After heating it red-hot and using a hammer and chisel to knock off as much garbage as possible, the crucible was serviceable again. We also pounded a pour spout into the nipple for ease of filling smaller molds.
Its also interesting to note that when the steel was first placed into the furnace, it burned green. We believe its was the zinc used in the galvanization process that was causing the flames to turn green.