molten metal glowing in a crucible, hot and liquid

metal crucible heat melt glow liquid cast alloy furnace process thermal forge pour mineral ingot mineralogy solidify refractory ladle iron elemental flux artisanry smelt hot liquidus oxidation solidus craftsmanship fabrication temperature foundry composition aluminum purification bitterness creation metallurgy metallurgical steel transformation sophistication raw artisan foundryman industrial mold bronze molten glowing generative