"So we will need the fire elemental spirit to help again? How will you spirit forge when the core is mostly done?" Walker wasn't sure what the process would be once the core had cooled. He thought that the fire would be needed to forge but not that the core would be cooled already.
"We need to add the elements mana crystals and shape the core properly. As it is now there are some rough surfaces that will hinder the runes we carve." This made more sense with the elders' explanation. If they needed to inlay the for elemental crystals in to the metal it would make more sense. They would need to carve and push the crystals in to place using multiple tools and a lot of mana.
"Also, when we say cool we mean holding its shape cool. But soft enough to mold and manipulate still." Grey realized that the elder had left some things to assume and that Walker would be better off with more specific information since he was absorbing everything he heard.