# Weld

<div align="left"><figure><img src="/files/9ss5pfF8TS2zWghyQSvN" alt=""><figcaption></figcaption></figure></div>

```
/**
 * Node that welds open mesh edges together.
 * 
 * Merges vertices and edges that are within a specified tolerance,
 * closing gaps and creating a watertight mesh.
 * 
 * Usage:
 * 1. Connect mesh with open edges
 * 2. Configure merge tolerance
 * 3. Output is the welded mesh
 */
```

| Parameter                                                                           | Description                                                                                  |
| ----------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------- |
| <p>bWeldPerSection</p><p><code>boolean</code></p>                                   | Whether to weld per section or whole mesh                                                    |
| <p>MergeVertexTolerance</p><p><code>float</code></p>                                | Edges are coincident if both pairs of endpoint vertices are closer than this distance        |
| <p>MergeSearchTolerance</p><p><code>float</code></p>                                | <p>Edges are considered as potentially the same if their midpoints are within this distance. |
| <br>Due to floating-point roundoff this should be larger than MergeVertexTolerance. |                                                                                              |
| <br>If zero, we set to MergeVertexTolerance\*2</p>                                  |                                                                                              |
| <p>OnlyUniquePairs</p><p><code>boolean</code></p>                                   | Only merge unambiguous pairs that have unique duplicate-edge matches                         |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.meshmorpher.com/graph/geometry/weld.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.