Millstone Parts are an Uncommon Resource used as the key ingredient in the Millstones grinding station. A single piece is crafted from 15 Stone at a Workbench, and one piece plus 15 Wood is enough to raise the full Millstones station in Build Mode. The recipe sits at Item Level 2 in the Crafting tree and carries a hefty 5.0 weight per unit, so plan inventory space before a gathering run.
Overview
Property | Value |
|---|---|
Category | Resource |
Rarity | Uncommon |
Item Level | 2 |
Weight | 5.0 |
Stack Size | 1 |
Crafting Station | |
Craft Time | Instant |
Description
In-game description: "Required to craft a millstone. Crafted at a workbench."
The item represents the dressed stone plates, spindle, and runner assembly that go into a working mill. Because the finished station is a large piece of terrain-anchored furniture, the recipe calls for a lot of raw stone: 15 Stone per part. You will usually only ever need a single Millstone Parts at a time, since most camps run one Millstones station tucked inside the main covered hut alongside the Workbench and other Craft Stations.
How to Unlock
The Millstone Parts recipe is not available from the start of the game. It unlocks through story progression once you push past the early Coastal Jungle and into the Foothills biome. The quest beats that open the Foothills gate are the Rescuing the Crew and I Need a Bigger Boat lines, followed by the Revenge Is Best Served Cold confrontation with Thomas Richards.
Once you land in the Foothills, the trigger is simple: walk up to a stalk of Corn growing in the wild and pick it up. That single interaction flags the Millstones technology as discovered and surfaces the Millstone Parts recipe at your Workbench on the next station interaction. There is no lookup screen to check; the recipe just appears.
Your Workbench also needs to be at Tier 2 before it will show and accept the Millstone Parts recipe. Raising a Workbench to Tier 2 is done by building the Sawhorse attachment inside the same Bonfire radius, which costs 20 Wood and 10 Copper Ingots. If you reach the Foothills without a Sawhorse placed yet, smelt a stack of copper first and the recipe will flip to craftable the moment the Sawhorse snaps into place.
How to Obtain
Millstone Parts cannot be found in the world, looted from creatures, or bought from vendors. The only way to get them is to craft them yourself at a Tier 2 Workbench with a single stack of Stone on hand.
Crafting Recipe
Ingredient | Quantity |
|---|---|
x15 | |
Output | Millstone Parts x1 |
Craft time is effectively instant at the Workbench; the only real cost is gathering and hauling the 15 Stone. One craft gives you the one part you need for the most common use case, a single Millstones station at the home base.
Gathering the Stone
Stone is one of the most common resources in the game, but it is also heavy, so gathering strategy matters more than location. The cleanest sources in order of convenience:
Beach cobbles: loose rocks scattered along the shoreline of almost every island can be picked up without a pickaxe at all. They return small amounts of Stone each and add up fast during early-game walks.
Surface boulders: grey chunks partially buried in grass or sand. Any pickaxe will break them; higher-tier pickaxes just swing faster.
Cave nodes: large stone veins inside cave systems yield more Stone per swing than open-world boulders and are the best throughput loop once you have a Copper Pickaxe or Iron Pickaxe.
Cliff faces: the rocky edges of the Foothills and later biomes have dense clusters of minable stone mixed with copper and iron nodes, so a single pass fills multiple crafting needs at once.
Pickaxe Progression
Tier | Pickaxe | Notes |
|---|---|---|
1 | Starter tool. Breaks cobbles and boulders on the beach and inland. Slow but sufficient for the first Millstone Parts batch. | |
2 | Faster swing and required to open iron nodes. Typical workhorse once the Foothills open up. | |
3 | Best general-purpose pickaxe. Breaks sulfur deposits in the Foothills and cave-grade nodes that yield more Stone per swing. |
Weight and Inventory Economy
Millstone Parts weigh 5.0 per unit and do not stack. That is heavy for a single inventory slot, but in practice you almost never carry more than one or two at a time because the only recipe that consumes them is the Millstones station itself (1 per placement). The bigger weight concern is the 15 Stone you need to bring back to the Workbench. Stone stacks more generously, but still clocks in at a meaningful weight, so route a gathering run near your base rather than a deep-island detour.
A common pattern: park your Ship at a Foothills beach, break 20 to 30 Stone from the nearest cobbles and boulders, sail straight home, craft the Millstone Parts at the Workbench, then place the Millstones station in Build Mode without ever leaving the base again.
What the Millstones Station Does
The station Millstone Parts unlocks is the heart of mid-game processing. The Millstones station has a short, focused recipe list, but every output feeds into something important:
Output | Input | Time |
|---|---|---|
Cornmeal x1 | Corn x2 | 15 seconds |
Bone Meal x1 | Bones x5 | 15 seconds |
45 seconds |
Cornmeal is the breakthrough ingredient. It feeds several bread and stew recipes at the Cooking Fire, including Bread, which gives long hunger and stamina restore and is worth stockpiling before any deep-island expedition. In this sense Millstone Parts are the first real step on the Corn to Cornmeal to Bread cooking chain.
Bone Meal converts raw Bones (a common drop from creatures) into fertiliser for Farming and into a minor cooking reagent. It is the difference between wasting bone stacks in storage and turning them into renewable crop input.
Homemade Gunpowder is the recipe that justifies the whole progression. Every firearm round fired at a Weaponsmith Workshop needs gunpowder, which needs the Millstones, which needs Millstone Parts. Without this chain, pistols and muskets are decorative, so treat the first Millstone Parts craft as the gate to the ranged combat tier.
Placement Requirements
After crafting a Millstone Parts, you place the actual Millstones station in Build Mode. The station will not operate unless two conditions are met on its tile:
Roof overhead: the Millstones station is weather-sensitive and needs a roof structure directly above its footprint, the same way a Workbench or Alchemy Table does.
Bonfire range: the station must sit inside the influence radius of a lit Bonfire. Without a nearby bonfire, it will render but not process recipes.
The practical takeaway is that Millstones live in the main covered hut of your base, clustered with the Workbench, Alchemy Table, Disassembly Table, and Cooking Fire. Drop the Millstones station first, then confirm the bonfire radius still reaches it before you break camp.
Used In
Millstone Parts are an ingredient in one recipe, the Millstones station itself:
Station | Cost | Role |
|---|---|---|
1 Millstone Parts + 15 Wood | Grinds corn into cornmeal, bones into bone meal, and combines ash with sulfur into homemade gunpowder. |
Tips
Craft a single Millstone Parts the moment your Workbench ticks over to Tier 2. You almost never need a second copy, so there is no reason to stockpile them in chests.
Do not start the Foothills run without at least a Copper Pickaxe. Breaking sulfur deposits for the gunpowder recipe requires an Iron Pickaxe, but Stone for the parts will come far faster with copper than with a stone-tier tool.
If you are rushing ranged combat, craft the Millstone Parts and place the Millstones station before you even finish a Musket or Pistol frame. The weapons are useless without a running gunpowder supply, so the grinder should come online first.
Keep the 5.0 weight in mind when sailing back from a Stone run; the full 15-unit stack in your inventory weighs 75 before you add tools and food, so clear bulk weight off your character before departing.
Millstone Parts cannot be repaired or refunded after placement. The moment the Millstones station snaps into Build Mode, the parts are consumed.
The same Foothills trip that gathers Stone for the part can also stock Sulfur and Corn, the two inputs the finished Millstones station needs first, so you can fire up the grinder the moment it is placed.
See Also
Millstones - the grinding station Millstone Parts build.
Stone - the raw ingredient, 15 needed per part.
Workbench - the crafting station for this recipe.
Sawhorse - Tier 2 Workbench upgrade required to see the recipe.
Homemade Gunpowder - downstream recipe processed at the Millstones.
Cornmeal - cooking reagent produced at the Millstones.
Bone Meal - farming fertiliser produced at the Millstones.
Resources - index of all gatherable and craftable items.
Crafting - overview of the crafting system and stations.
Building Pieces - related construction parts index.
Details
Properties
Property | Value |
|---|---|
Weight | 5.0 |
Crafted By
Crafted at: Workbench
Ingredient | Quantity |
|---|---|
x15 |