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Difference between revisions of "Millstone"
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| A '''millstone''' is used to grind up certain [[plants]] to make [[sugar]], [[flour]], [[dye]], and [[slurry]]. Each [[milling]] job requires an empty [[bag]]. To operate, it needs to be connected to a mechanical [[power]] source such as a [[water wheel]] or [[windmill]] that supplies it with 10 power units. If none is available, a [[quern]] can be used instead, although millstones process plants much faster than querns. Before they can be placed as a building, you must first construct the millstone at a [[Stoneworker's workshop]]. | A '''millstone''' is used to grind up certain [[plants]] to make [[sugar]], [[flour]], [[dye]], and [[slurry]]. Each [[milling]] job requires an empty [[bag]]. To operate, it needs to be connected to a mechanical [[power]] source such as a [[water wheel]] or [[windmill]] that supplies it with 10 power units. If none is available, a [[quern]] can be used instead, although millstones process plants much faster than querns. Before they can be placed as a building, you must first construct the millstone at a [[Stoneworker's workshop]]. | ||
| − | If the power to the millstone is interrupted, any jobs must be  | + | If the power to the millstone is interrupted, any jobs must be re-queued when power is returned. Therefore it is best to have uninterrupted power, or at least the ability to run it for a long period of time. | 
| − | A millstone can be placed in a hanging state, however, it will not actually be constructed as the builder needs to be able to stand on the square on which it is being built. Because of this, a millstone must be powered from above or from the side, not from below in order to be able to complete construction. | + | A millstone can be placed in a hanging state, however, it will not actually be constructed, as the builder needs to be able to stand on the square on which it is being built. Because of this, a millstone must be powered from above or from the side, not from below in order to be able to complete construction. | 
| Since [[Release information/52.03|52.03]] millstones can specify plants for milling jobs. If you don't specify the target plant in the order or set a custom input stockpile, the miller will pick the closest random plant, with the usual, occasionally surprising, definition of closest. | Since [[Release information/52.03|52.03]] millstones can specify plants for milling jobs. If you don't specify the target plant in the order or set a custom input stockpile, the miller will pick the closest random plant, with the usual, occasionally surprising, definition of closest. | ||
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| ==An example setup== | ==An example setup== | ||
| − | As it is most efficient to set up workshops near their  | + | As it is most efficient to set up workshops near their material sources, usually by putting stockpiles next to them, it's common for millstones to be set up near farm plots.  Putting a millstone just under the surface lets it be powered by a windmill on the surface, like so: | 
| ::{|style="border: 1px solid #0b0; background: #dfd" | ::{|style="border: 1px solid #0b0; background: #dfd" | ||
Latest revision as of 13:00, 29 October 2025
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| v52.04 · v0.47.05This article is about the current version of DF. Note that some content may still need to be updated. | 
A millstone is used to grind up certain plants to make sugar, flour, dye, and slurry. Each milling job requires an empty bag. To operate, it needs to be connected to a mechanical power source such as a water wheel or windmill that supplies it with 10 power units. If none is available, a quern can be used instead, although millstones process plants much faster than querns. Before they can be placed as a building, you must first construct the millstone at a Stoneworker's workshop.
If the power to the millstone is interrupted, any jobs must be re-queued when power is returned. Therefore it is best to have uninterrupted power, or at least the ability to run it for a long period of time.
A millstone can be placed in a hanging state, however, it will not actually be constructed, as the builder needs to be able to stand on the square on which it is being built. Because of this, a millstone must be powered from above or from the side, not from below in order to be able to complete construction.
Since 52.03 millstones can specify plants for milling jobs. If you don't specify the target plant in the order or set a custom input stockpile, the miller will pick the closest random plant, with the usual, occasionally surprising, definition of closest.
An example setup[edit]
As it is most efficient to set up workshops near their material sources, usually by putting stockpiles next to them, it's common for millstones to be set up near farm plots. Putting a millstone just under the surface lets it be powered by a windmill on the surface, like so:
- Side view - - - = - - - - - = - - - * - * - 1 - 2 
 
Note that version 1 only works if the windmill is built first, and version 2 only works if the millstone is built first.
When building a vertically powered millstone, build the components from the bottom up. First place the millstone, then place the vertical axles above the millstone, then place the windmill last.
For a basic overview of how the different machine parts work and work together, see machinery.
Millable plants[edit]
Sweet pods can be milled into dwarven sugar.
Other millable plants are listed below.
| Plant | Dye | Color | Crop type | Value | |
|---|---|---|---|---|---|
| Dimple cup | Dimple Dye | Midnight Blue | Underground | 20☼ | |
| Blade weed | Emerald Dye | Emerald | Aboveground | 20☼ | |
| Hide root | Redroot Dye | Red | Aboveground | 10☼ | |
| Sliver barb | Sliver Dye | Black | Aboveground | 20☼ | |
| Crop name | Crop value | Flour | Flour value | |
|---|---|---|---|---|
| Cave wheat | τ | 2☼ | Dwarven wheat flour | 20☼ | 
| Longland grass | τ | 2☼ | Longland flour | 20☼ | 
| Whip vine | § | 1☼ | Whip vine flour | 25☼ | 
| Single-grain wheat | τ | 2☼ | Single-grain wheat flour | 20☼ | 
| Two-grain wheat | τ | 2☼ | Two-grain wheat flour | 20☼ | 
| Soft wheat | τ | 2☼ | Soft wheat flour | 20☼ | 
| Hard wheat | τ | 2☼ | Hard wheat flour | 20☼ | 
| Spelt | τ | 2☼ | Spelt flour | 20☼ | 
| Barley | τ | 2☼ | Barley flour | 20☼ | 
| Buckwheat | τ | 2☼ | Buckwheat flour | 20☼ | 
| Oats | τ | 2☼ | Oat flour | 20☼ | 
| Rye | τ | 2☼ | Rye flour | 20☼ | 
| Sorghum | τ | 2☼ | Sorghum flour | 20☼ | 
| Rice | τ | 2☼ | Rice flour | 20☼ | 
| Maize | τ | 2☼ | Maize flour | 20☼ | 
| Quinoa | τ | 2☼ | Quinoa flour | 20☼ | 
| Kaniwa | τ | 2☼ | Kaniwa flour | 20☼ | 
| Pendant amaranth | τ | 2☼ | Pendant amaranth flour | 20☼ | 
| Blood amaranth | τ | 2☼ | Blood amaranth flour | 20☼ | 
| Purple amaranth | τ | 2☼ | Purple amaranth flour | 20☼ | 
| Pearl millet | τ | 2☼ | Pearl millet flour | 20☼ | 
| White millet | τ | 2☼ | White millet flour | 20☼ | 
| Finger millet | τ | 2☼ | Finger millet flour | 20☼ | 
| Foxtail millet | τ | 2☼ | Foxtail millet flour | 20☼ | 
| Fonio | τ | 2☼ | Fonio flour | 20☼ | 
| Teff | τ | 2☼ | Teff flour | 20☼ | 
| Flax | τ | 2☼ | Flax flour | 20☼ | 
| Hemp | τ | 2☼ | Hemp flour | 20☼ | 
Bugs[edit]
| Workshops  b  o | 
Ashery ·  Bowyer ·  Carpenter ·  Crafts ·  Jeweler ·  Stoneworker ·  Mechanic ·  Metalsmith's forge (Magma) ·  Screw press ·  Siege workshop ·  Soap shop | 
|---|---|
| Clothing and Leather  b  o  l | |
| Farming  b  o  f | |
| Furnaces  b  o  u | |
| Other | |
| Furniture | |
|---|---|
| Tools | |
| Access | |
| Constructions | |
| Machine and trap parts | 
Axle • Gear assembly • Lever • Mechanism • Millstone • Pipe section • Pressure plate • Roller • Screw pump • Support • Trap • Water wheel • Windmill | 
| Other buildings | |
| Related articles | |

