REDSTONEPEDIA › Farms › Iron farm
Day-1 iron farm (iron armour on your first day)
296 iron an hour · 198 blocks · 1.5 an hour per block · 18 iron to build · golems burn in lava pits
Villagers scared by a zombie summon iron golems; the farm kills them and collects their iron in a chest.
To build it: 18 iron in hand, 16 buckets of lava and 3 villagers from the village. Hide the zombie by hand the first night. Needs the zombie hidden by hand after days away.
44 minutes from the first block to a full set of iron armour, then 296 iron an hour · needs no redstone
Try it
Press play to watch it work: the villagers sleep at night and panic at the zombie by day, golems spawn and die, and the hoppers carry their iron to the chest; the top right counts the game's time, the golems and the iron. The magenta floor is where a golem can spawn, seen through the blocks (Spawn spots hides it). The chest tagged OUT, under the last hopper, collects the iron. In the game, build it and wait near it.
How this design does it: Three villagers sleep on their beds in closed 1-cell cobblestone pods under cobblestone slabs; a zombie in a boat 7 blocks north is in view of their standing and sleeping eyes.
Build it
Download .litematic Download the design as text
The .litematic opens in Litematica (Minecraft 26.3): every block of the design in one region. The text file is the same build written as plain text, block by block.
Pour in the water and the lava (16 bucketfuls) where the view shows them. On the first night, hide the zombie from the villagers by hand (a block in front of it) and take the block away in the morning: the villagers need one night's sleep before they summon the first golem.
Blocks used: chest cobblestone cobblestone slab hopper lava oak boat oak trapdoor red bed torch tripwire tripwire hook villager water
Details: how it works, measurements and properties
In depth
villagers scared by a zombie summon iron golems; the farm kills them and collects their iron in a chest
How to try it
Press play to run the farm. The villagers sleep in their beds at night and panic at the zombie by day, golems spawn, fall and die in the lava, and the hoppers carry their iron and poppies to the chest. The chest tagged OUT, under the last hopper, collects the iron. The top right shows the game's time, the golems so far and the iron in the chest; the speed menu plays it faster or slower. Drag to look around, pinch or scroll to zoom.
Measurements
On Hard, through rain, thunder and lightning.
| metric | value | what it means |
|---|---|---|
| iron per hour per block | 1.49 | iron ingots an hour for each block you place |
| iron per hour | 296 | iron ingots an hour |
| iron range | 95% 292-299 | the range its rate falls in, 95% sure |
| golems per hour | 74.2 | iron golems an hour |
| seconds per golem | 48.5 | the time between two golems |
| share of ceiling | 62% | how close it comes to the game's limit: one golem every 30 seconds for each group of villagers |
| modules | 1 | groups of villagers that each summon golems on their own |
| iron per hour per module | 296 | iron ingots an hour for each group of villagers |
| kill | 12.05 s | how long a golem lives before the farm kills it, at the longest |
| restarts after a missed night | no (hide the zombie by hand the first night) | whether it starts again by itself after a night its villagers could not sleep (rain at dusk, a storm, you away) |
| restarts after days away | no | whether it starts again by itself when you come back after days away |
| rain | clear day 298 iron/h; rain day 290 iron/h; thunder day 287 iron/h | iron an hour on a clear day, a rainy day and a stormy day |
| lightning | about 0.00031 iron lost per thunderstorm; villagers turned into witches about every 5,332 game days (one strike can take up to 3); the zombie's boat broken about every 6,220 game days; a fire beside a flammable block never; a skeleton trap horse on the farm about every 18,014 game days; the farm breaks in about 2,871 game days (a villager made a witch first); thunderstorms 1.4% of the time (5 min 10.55 s each on average) | what thunderstorms cost: the iron a strike burns, and how often a strike turns a villager into a witch, breaks the zombie's boat or starts a fire |
| thunder loss | 3.6 | iron lost for each hour of thunder |
| sunburn | never (the zombie never sees the sky) | whether the zombie can burn in daylight |
| fire | never | whether the lava can set the farm on fire |
| bill | 18 iron, 0 quartz, 3 villagers, 3 beds, 1 zombie | what it costs in survival: iron (hoppers, the bucket and every tool you need), quartz, villagers, beds |
| payback | 4 min | how long the farm takes to make back the iron it cost |
| build time | 39 min at day-1 prices (194 placed, 16 lava sources in 4 trips, 3 villagers; the most: 3 villager_moved 540 s, 4 lava_trip 480 s, 3 extra_bucket 270 s, 194 place 194 s, 1 zombie 180 s, 1 hopper 154 s, 10 tripwire 150 s, 1 tool:bucket 90 s) | about how long the build takes: placing and digging its blocks, fetching the lava, moving the villagers in |
| time to an iron kit | 44 min (the build | about how long from starting the build to a full set of iron armour (24 iron), its own iron counted |
| then | 24 iron at the card's rate) | |
| build minutes | 38.8 | |
| t kit minutes | 43.7 | |
| iron per hour sleeping | 297 | |
| volume per module | 1,120 | |
| entities alive | 5.3 | |
| entities peak | 8 | |
| tools | bucket 3 + extra buckets 9 | the tools you need and the iron each one costs: a bucket for lava and water, shears for leaves, an iron pickaxe for redstone dust |
| lava sources | 16 | lava source blocks to bring: one bucket trip each |
| materials | day 1 | the stage of the game its materials need: day 1, the Nether (quartz, slime, magma...) or the End |
| chunk columns | 1 | how many 16 x 16 chunk columns it covers |
| storage | 5.2 h (32 slots; 74 poppies/h) | how long its chests and hoppers hold the iron and poppies before they fill |
| hoppers per 1000 iron/h | 3.4 | hoppers for each 1000 iron an hour: each hopper costs the server a little work every tick |
| real game | yes, in rain and in thunder too | it works in the real game too, in rain and in thunder |
| redstone dust | none | the redstone dust its blocks take to craft (a repeater or a comparator 3, an observer 2, a piston 1...): redstone ore needs an iron pickaxe to mine |
Notes from its designer
The day-1 iron farm: for 18 iron (the hopper, four buckets and the tripwire hooks) and no quartz, three villagers scared by a zombie summon iron golems that burn in lava pits, about 296 iron an hour. Three villagers sleep on their beds in closed 1-cell cobblestone pods under cobblestone slabs; a zombie in a boat 7 blocks north is in view of their standing and sleeping eyes. Golems spawn in a row of 8 1x1 pits west of the zombie, a lava source beside their head on both sides, and burn where they stand. One tripwire runs through every pit at knee height: a golem in any pit opens the trapdoor in front of the zombie, which hides it, and the villagers calm down (at night they fall asleep) while the golem burns. A water channel under the string carries the iron to one hopper. Hide the zombie by hand on the first night: the villagers need a recent sleep to summon the first golem. Built from day-1 materials: cobblestone, cobblestone slabs and torches (no glass, leaves or stone).
Properties
| Study | Mob farms |
|---|---|
| Kind | Day-1 iron farm (iron armour on your first day) |
| Blocks placed | 198 |
| Box | 16×7×10 (1120 blocks of space) |
| Made of (the blocks that change state) | chest, cobblestone, cobblestone slab, hopper, lava, oak boat, oak trapdoor, red bed, torch, tripwire, tripwire hook, villager, water |
| Inputs / outputs | no input / OUT |
| Design file | iron-day1 |
The design file
Design file (104 lines)
# Iron farm: 296 iron an hour · 198 blocks · 1.5 an hour per block · 18 iron to build · golems burn in lava pits
# https://vjeux.github.io/redstonepedia/farms/iron/iron-day1.html
# CIRCUIT: seconds per golem 48.5
name: iron-day1
circuit: mob-farm iron_ingot day-1
how: golems burn in lava pits
port output: 0 -3 -6
entity: minecraft:villager 0.5 0.5625 0.5
entity: minecraft:villager 2.5 0.5625 0.5
entity: minecraft:villager 4.5 0.5625 0.5
entity: minecraft:oak_boat 2.5 0.5 -6.8 {Passengers:[{id:"minecraft:zombie"}]}
origin: -10 0 -8
palette:
A minecraft:cobblestone_slab[type=bottom,waterlogged=false]
B minecraft:tripwire_hook[attached=true,facing=east,powered=false]
C minecraft:chest[facing=north,type=single,waterlogged=false]
D minecraft:tripwire_hook[attached=true,facing=west,powered=false]
H minecraft:hopper[enabled=true,facing=down]
L minecraft:lava[level=0]
O minecraft:oak_trapdoor[facing=north,half=bottom,open=false,powered=false,waterlogged=false]
R minecraft:red_bed[facing=north,occupied=false,part=foot]
T minecraft:torch
W minecraft:water[level=0]
c minecraft:cobblestone
o minecraft:oak_trapdoor[facing=south,half=bottom,open=true,powered=false,waterlogged=false]
r minecraft:red_bed[facing=north,occupied=false,part=head]
t minecraft:tripwire[attached=true,disarmed=false,east=true,north=false,powered=false,south=false,west=true]
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