The recipes
A furnace (20 stone + 2 copper ore) smelts: 5 copper ore → copper bar, 5 iron ore → iron bar, 5 gold ore → gold bar, 1 quartz → 1 refined quartz, 1 iridium ore → iridium bar (needs the gold-tier furnace upgrade path... practically: furnaces are cheap, build banks of them). Bars feed every upgrade path: tools, sprinklers, lightning rods, kegs and preserves jars.
The refined quartz loop
Quartz is abundant in the mines and smelts into refined quartz — the ingredient for quality sprinklers, lightning rods, crystal paths and more. A mine run that looks like "just quartz" is actually a sprinkler-material stockpile. Keep a furnace bank beside your chests and process on rainy days.
Bars as a barometer
Your bar stock tells you when to upgrade what: copper for the first tool tier, iron for quality sprinklers and the steel pickaxe, gold for quality sprinklers and slime incubators, iridium for the endgame (iridium sprinklers, barn/coop top upgrades). The furnace bank turns mine runs into permanent farm infrastructure.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- Minecraft — official site — the game of record for mechanics, versions and release notes.
- Mojang Studios — the developer, and the authority on balance changes between versions.
Figures, formulas and reference tables last verified: 19 September 2026.
