Charcoal Pile Igniter

The Charcoal Pile Igniter (CPI) is a Steam tier multiblock for mass producing charcoal from logs. The CPI is significantly faster than the Coke Oven but cannot be automated, does not produce creosote oil, and generates pollution. The time required to convert logs into brittle charcoal blocks scales with the square root of the number of logs meaning larger batches are more efficient. A maximum size CPI takes 603 seconds to produce approximately 896 charcoal from 605 logs. That is nearly two orders of magnitude faster than the Coke Oven which takes 60 seconds to produce 1 charcoal from 1 log.

The dimensions of the CPI are incredibly flexible. Start by building a brick floor anywhere from 1x1 to 11x11 in size. The shape of the brick floor can be rectangular so long as the length and width do not exceed 11 blocks. Next, place 1-5 layers of logs directly atop the brick floor without any air gaps--the machine will not run if there are missing logs inside the structure. The logs do not all need to be the same type or rotated the same direction. Finally, place the CPI controller atop the center log and surround the remaining logs in dirt or grass.

Structure

• Controller: Top layer, centered and touching a log
• 1-605 Any Log
• 4-341 Dirt or Grass covering the logs
• 1-121 Bricks underneath the logs

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  1) Build a brick floor that is less than or equal to 11x11 in size.
• 
  2) Place 1-5 layers of logs atop the brick floor. No gaps allowed.
• 
  3) Surround the logs in dirt or grass.
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  4) After some time, the logs convert to brittle charcoal blocks.

As soon as the structure is built correctly, the CPI controller lights up, starts spinning, and emits smoke to indicate that it has begun converting the logs into brittle charcoal blocks. Use the following equation to determine the duration of the "recipe" (in seconds) from the total number of logs. Note that larger batches are more efficient because they produce more charcoal per second, on average.

${\displaystyle {\displaystyle {\text{Duration (s)}}=10{\sqrt {6\times {\text{Logs}}}}}}$

The pollution of the CPI similarly scales with the duration of the recipe and therefore the number of logs, as seen in the following equation. This always averages out to 100 gibb/s, but the pollution is released all at once at the very beginning of a recipe instead of during processing. That means no additional pollution is generated while the machine is running despite the particle effects making it appear otherwise.

${\displaystyle {\displaystyle {\text{Pollution (gibbl)}}=100\times {\text{Duration}}}}$

Once finished, the brittle charcoal blocks inside the structure must be broken manually with an axe. Each block drops 1-2 charcoal each which is slightly more efficient than the Coke Oven to compensate for the extra effort. It is highly recommended to use a Lumber Axe to harvest up to 12 brittle charcoal blocks at a time and clear it out faster. Applying luck/fortune to an axe does NOT increase the charcoal drop rate.