# This file is automatically generated. Please don't edit it manually. # To submit a bug report on the content, see # https://devforum.roblox.com/c/bug-reports/documentation-issues/72 name: UnionOperation type: class memory_category: Instances summary: | Result of parts that have been joined together into a single solid model. description: | A **UnionOperation** is the result of individual parts that have been joined together into a single solid model through Studio's solid modeling **Union** tool, or through `Class.BasePart:UnionAsync()` or `Class.BasePart:SubtractAsync()`. See [Solid Modeling](../../../parts/solid-modeling.md) to learn more about Studio's solid modeling tools and methods. code_samples: [] inherits: - PartOperation descendants: [] tags: [] deprecation_message: '' properties: [] methods: [] events: [] callbacks: []