Metallurgy

Recycle iron items into iron blocks, ingots and nuggets

Smelt larger gold items for ingots and smaller items for nuggets

Use the stonecutter to craft all types of copper doors and trapdoors.

Recycle copper items and blocks (plus their variants) into copper nuggets and ingots

Modifies compass recipe to use fewer iron ingots

Modifies clock crafting recipe to use fewer gold ingots