The three functional uses
Lightning rod (3 copper): place it on your roof and lightning strikes the rod instead of setting your wooden base on fire — cheap base insurance. Spyglass (2 copper + 1 amethyst shard): zoom vision for scouting terrain and finding villages. Copper blocks: building material with a signature oxidation aesthetic.
The oxidation timeline
Copper blocks oxidize through four stages (clean → exposed → weathered → oxidized) over random ticks — fully orange-green in weeks of game time. Honeycomb waxes a block to freeze the current stage permanently; an axe scrapes oxidation back one stage. Builders use staged clusters of waxed and unwaxed copper for aged-roof aesthetics.
Stop hoarding ore
Copper ore smelts to ingots 1:1, and raw copper drops in 2–3 chunks — smelt everything as you go. Unlike iron and gold, copper has no tool/armor tier in modern versions (it was cut during development), so there is no reason to stockpile: convert to blocks for compact storage (9 ingots per block) and spend on rods, spyglasses and decoration.
