Copper and iron pass through two different forms: an ore you gather and an ingot you process. Recipes for tools and benches commonly ask for the ingot, so carrying an ore stack does not yet satisfy that ingredient.

Crafting is divided between stations. Build the station a recipe asks for, then check its tier requirement separately: owning a Workbench does not replace the Furnace, Blacksmith's Anvil or Tanning Rack.