No smeltery built.

Items flow: Mine → Stockpile → Smeltery → Tank → Casting → Forge

1. Mine raw stone, wood and ores — better tools unlock deeper zones.
2. Part Builder: carve Wood / Stone / Flint / Paper / Obsidian parts with Patterns.
3. Smeltery: melt metal ores into liquid (144 mB = 1 ingot), mix alloys, pour into Casts for metal parts.
4. Tool Forge: assemble Head + Tool Rod + Binding. Stats come from the materials — every part matters.
5. Modifiers: Redstone, Quartz, Lapis, Diamond… then automate, then Reforge for Mastery.