---
title: FK Chain
description: "![](https://ariserigging.com/wp-content/uploads/2026/05/image-249.png) Creates a simple FK chain. Guides: - **'{number} Guide' **- Position where the FK joints will be. Number of guides is determined by the attribute 'Joints'. Attributes: 1. **'Single Side Guide'** - For some [**Aim Guides**](https://ariserigging.com/docs/elements/guides/), the 'side_vector' (twist) is locked and…"
url: "https://ariserigging.com/docs/basic-nodes/fk-chain/"
updated: "2026-05-13"
category: Basic Nodes
---

# FK Chain

![](https://ariserigging.com/wp-content/uploads/2026/05/image-249.png)

Creates a simple FK chain.

Guides:

- **'{number} Guide' **- Position where the FK joints will be. Number of guides is determined by the attribute 'Joints'.

Attributes:

1. **'Single Side Guide'** - For some [**Aim Guides**](https://ariserigging.com/docs/elements/guides/), the 'side_vector' (twist) is locked and driven by a single 'side_vector', which keeps the orientation consistent. Uncheck this attribute to unlock them if you need more control over the twist. Re-template is required when changes are made. [**[Video]**](https://youtu.be/-1fpRw6oJME?t=233)
2. **'Ctrls Scale'** - Scale all the node ctrls. Note that the attachments [**'Ctrls Settings'**](https://ariserigging.com/docs/attachments/ctrlssettings/) and [**'CtrlsShape'**](https://ariserigging.com/docs/attachments/ctrlsshape/) will override this.
   *[As of version 1.06.03]*  'Update' button to change the ctrls size without requiring a rebuild. [**[Video]**](https://youtu.be/-1fpRw6oJME?t=31)
3. **'Clean Transformations'** -  If checked, the [**zeroed pose**](https://ariserigging.com/docs/elements/poses/) will be the same as the [**bind pose**](https://ariserigging.com/docs/elements/poses/); if unchecked, when zeroing the ctrls, they will align with a world axis specified in the following two attributes. **[[Video]](https://youtu.be/-1fpRw6oJME?t=61)**
4. **'World Orientation'** - The world axis the ctrls will align with when zeroed. Usually, this attribute's default value is the correct value. **[[Video]](https://youtu.be/-1fpRw6oJME?t=61)**
5. **'World Orient Twist'** - Along with 'World Orientation', defines the ctrls zeroed pose. Usually, the default value of 0 is the correct value. **[[Video]](https://youtu.be/-1fpRw6oJME?t=61)**
6. **'Expose RotateOrder'** - Exposes all the ctrls 'RotateOrder' attribute in the Channel Box. [**[Video]**](https://youtu.be/-1fpRw6oJME?t=149) 
7. **'Secondary Ctrls'** - Secondary ctrls are added under some ctrls to help prevent gimbal lock.
   A visibility attribute is added to the parent ctrl. [**[Video]**](https://youtu.be/-1fpRw6oJME?t=157)
8. **'Joints'** - The number of joints/guides; modifying this attribute requires a 're-template'.
9. **'Ctrls Translate'** - If checked, animators will also be able to translate the FK ctrls.
10. **'Create Last Joint Ctrl'** - Creates a ctrl for the last joint.

Connections:

- **'Root Input'** - Drives the whole node.
- **'Root Output'** - An output at 'fk_chain_0_jnt'.
- **'Tip Output'** - An output at the last joint of the chain.

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