Crucible and material distribution

In an addon mod

Ship the files on this page in your jar under src/main/resources/data/<your namespace>/, or generate them from Java sources: see Recipes and data.

The crucible’s alloying table, and the table that says what any item melts into.

Type	Machines	Schema	Picked by	Rows in HBM
hbm:crucible	Crucible	own	selector, saves name	13
hbm:material_distribution	Crucible, foundry, Electric Arc Furnace	own	item tags, then item row (below)	43

Both work in molten material, counted in quanta: 8 to the nugget, 72 to the ingot, 648 to the block. Materials are named by their HBM material name (iron, steel, arsenic_bronze, flux, slag, …); see material stacks.

crucible

Alloying recipes. The player picks one in the crucible’s recipe selector, and the crucible saves its name. While the selected recipe’s inputs are all in the crucible’s recipe stack, it runs once every frequency ticks.

Field	Type	Required	Default	Meaning
name	string	yes		Internal name, saved by the crucible. Unique in the table.
frequency	int	no	1	Ticks between runs.
icon	item output ("id" or {"id", "count"})	no	none	Icon in the selector.
inputs	list of material stacks	yes		Consumed per run.
outputs	list of material stacks	yes		Produced per run.
order	int	no	after HBM’s	Selector order.

data/hbm/recipe/crucible/steel.json (HBM)

{
  "type": "hbm:crucible",
  "name": "crucible.steel",
  "frequency": 20,
  "icon": "hbm:ingot_steel",
  "inputs": [
    { "material": "iron", "amount": 16 },
    { "material": "carbon", "amount": 24 },
    { "material": "flux", "amount": 8 }
  ],
  "outputs": [{ "material": "steel", "amount": 16 }],
  "order": 0
}

Notes:

• The crucible does not check that the outputs fit. Keep the output total at or below the input total, as 1.7 warns, or material “expands” while alloying.
• Two rows with the same name: the one first in order is kept, the other dropped with a warning.
• The recipe is shown under its icon’s item name.
• There is no requires field.

material_distribution

What an item consists of when melted. The crucible, the foundry and the arc furnace (its liquid-mode rule) all read it.

Field	Type	Required	Meaning
input	item id or #tag (string)	yes	The item, or every item in a tag.
materials	list of material stacks	yes	What one item melts into, in quanta.

data/hbm/recipe/material_distribution/tag_ores_iron.json (HBM)

{
  "type": "hbm:material_distribution",
  "input": "#c:ores/iron",
  "materials": [
    { "material": "iron", "amount": 144 },
    { "material": "titanium", "amount": 24 },
    { "material": "stone", "amount": 162 }
  ]
}

How an item’s materials are found, as in 1.7:

1. Its tags are checked in turn. The first tag that has a tag row gives that row’s materials, and the search of tags stops. If instead a c:<shape>/<material> tag comes first (c:ingots/steel, c:plates/copper, …) for a smeltable material, the item counts as that shape of that material (an ingot is 72 quanta) and the search stops.
2. An item row for the item is then added to what the tags gave.
3. If nothing was found, an HBM autogen item counts as its own shape and material.
4. A scrap item adds the material it holds.

So a tag row replaces the automatic c: shape scan for every item in that tag, while an item row adds to it. A second row for the same item or tag replaces the first: the one whose recipe id sorts last wins.

Most items need no row: anything tagged c:ingots/<material>, c:nuggets/<material>, c:plates/<material> and so on already melts by its tag. Rows are for things that are not one shape of one material, such as ores, rails or stamps.