> For the complete documentation index, see [llms.txt](https://ebal-studios.gitbook.io/spaceship-builder-designer-tools/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ebal-studios.gitbook.io/spaceship-builder-designer-tools/introduction.md).
# Introduction
Spaceship Builder Designer Productivity Tools helps when working on modular 3D assets such as the [Ultimate Spaceships Creator](https://u3d.as/2zmk). These tools will help you combine meshes of modular examples to improve performance, easily mirror objects or batch replace prefabs or materials. Please watch video tutorial to know exactly what these tools do.
Video tutorial:
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Features:
* Mesh Combiner/baker.
* Juxtapose: mirror/reflect, array duplicate and align.
* Batch prefab replacer.-Easy material replacer.
* Simple renamer.
* Collider extractor.
* Mesh rotator and mesh reflector.
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⚠️Important Note: These tools do not create Spaceships or contain any Spaceship art. These tools have been designed to best work with our [Ultimate Spaceships Creator](https://u3d.as/2zmk) or the [Spacce Stations Creator](https://u3d.as/3fVB) and should NOT be bought to create spaceships or space stations on their own.
**Apply to mode:**
In several tools you may encounter an "Apply To:" option.
This option determines to which game objects the tool is applied to.
* Selected: applies only to the selected game objects.
* Children: Will diregard selected game objects and apply only to the first level of children.
* Children Recursive: Will diregard selected game objects and apply to all children and the children of their children, etc..
* Recursive: will apply to selected, their children, the children of their children, etc..
