Millstone

The Millstone is a more basic equivalent of the Crushing Wheels, and is most likely the first of the two that the Player will construct. It is capable of applying milling recipes to any valid items inserted from above.

## Obtaining

### Breaking

1. ↑ Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.

## Throughput (Speed)

There are 2 variables that effect the processing speed of the Millstone: RPM and recipe duration. The recipe duration is a number assigned to each recipe to determine is processing time in relation to the RPM, a table with values below.

### Throughput Formulas

To calculate the exact number of game ticks it take to process one recipe (gt/recipe), we must first calculate the milling processing factor (mpf) as

m
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abs
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16
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{\displaystyle mpf = \text{abs}(RPM / 16) }

.

If the mpf is less than 1 or more than 512, then it is forced to be 1 or 512 respectively, otherwise it stays unchanged. Now we can calculate the game ticks per recipe as

g
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ceil
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1

{\displaystyle gt/recipe = \text{ceil}( recipe\\_duration / mpf ) + 1 }

where the ceil function simply rounds up a number (so for example 8.1 becomes 9).

Finally, to calculate the exact number of seconds per recipe (s/recipe) or the number of recipes processed per second (recipe/s) we can use these formulas:

s

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20

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20

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{\displaystyle s/recipe = (gt / recipe) /20 \qquad recipe/s = 20 / (gt / recipe) }

### Recipe Table

**If a recipe doesn't appear in the table is duration is probably 100, because that's the default value.**

## Usage

A Millstone can be powered by a Shaft from below or by a Cogwheel from the side.

There are two ways to insert items into a Millstone:

* Dropping items on top of it: anything that can be processed will be picked up if the input buffer is empty.
* Hoppers, Funnels, Chutes, and other inserters can directly feed it items from any side.

Once a valid item has been placed into the mill through any of the means listed above, the Millstone will begin to turn, and particles will appear around the machine. Once finished, the Millstone will not drop or output the result by itself, but there are two ways to remove processed items:

* Right-clicking the Millstone with an empty hand: this will manually pick up everything in the output buffer.
* Hoppers, Funnels, Chutes, and other exporters can pull items out of the output buffer from any side.

The Millstone takes time to process its inputs. The exact time depends on the Block Hardness and the amount of speed being fed into the machine. It follows the formula:

(
128
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{\textstyle (128\*Block Hardness)/RPM=Processing Speed}

, where the Processing Speed is the time in seconds the Millstone will take to create an output.

### Milling

Millstones and Crushing Wheels can apply the following recipes to inserted items:

## History

* 0.5: Recipe changed.
* 0.2.2: Introduced.

## Gallery

The Millstone being powered simutaniously by a cog from the side and a shaft through the bottom.From Left to Right: A Chute, Hopper, Belt and Dropper all dropping items into a millstone, displaying the many ways you can insert an item into the machine.