The Art of Metal Casting

Metal casting is literally just extreme baking but with liquid fire instead of dough.

You take raw iron, toss it into a massive Cupola furnace, and melt it down until it flows like

water. Then comes the gating system, which is basically a complex waterslide

that guides this molten metal into a mold made of sand. You have to calculate everything perfectly,

from how the metal shrinks when it cools to letting the gas escape so you don't get blowholes.

It is actually wild to think the engine block in your car started its life as hot soup poured

into a box of dirt.