# Duct untyping

Crafting recipe that clears the fluid of a Universal Fluid Duct item.

File: `data/<namespace>/recipe/<path>.json`.

`hbm:duct_untype` matches a crafting grid holding only one `hbm:fluid_pipe`, `hbm:fluid_pipe_silver` or `hbm:fluid_pipe_colored` with a set fluid. [until NTM 1.0.3: It returns one `hbm:fluid_pipe` without a fluid.][since NTM 1.0.3: It returns one duct of the input's item type without a fluid, preserving the steel, silver or colored variant.]

> **since NTM 1.0.1**
>
> The duct may differ from its defaults only in `hbm:fluid_content`.

## Fields

| Field | Meaning and default |
| - | - |
| `type` | Selects the `hbm:duct_untype` recipe format. |
| Additional fields | None |

## Example:

Shipped recipe `data/hbm/recipe/duct_untype.json`:

```json
{"type": "hbm:duct_untype"}
```