> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nodi3d.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ImplicitUnion

> Implicit Union node: Combine Implicit fields using union (min) operation. Implicit › Boolean node in Nodi, with its inputs, outputs and properties.

Combine Implicit fields using union (min) operation.

**Category**: [Implicit](https://docs.nodi3d.com/nodi-editor/nodes.md#implicit) › Boolean\
**Shown in the node menu as**: Implicit Union

## Inputs

| Input | Type |
| - | - |
| shapes | `Implicit` |
| blend radius | `Number` |
| blend (0: Smooth, 1: Chamfer) | `Number` |

## Outputs

| Output | Type |
| - | - |
| combined | `Implicit` |

## Properties

Properties are set in the Inspector and are used when the matching input is not connected.

| Property | Type |
| - | - |
| blend radius | `Number` |
| blend | `Category` |

## Related nodes

Other nodes in Implicit › Boolean:

* [ImplicitDifference](https://docs.nodi3d.com/node/implicit-difference.md): Subtract one Implicit field from another.
* [ImplicitIntersection](https://docs.nodi3d.com/node/implicit-intersection.md): Combine Implicit fields using intersection (max) operation.


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