## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.firstresonance.io/llms.txt)

Use this file to discover all available pages before exploring further.

You manage [tool models](https://docs.firstresonance.io/build-hardware/tools) in the **Tools Library**: in the **Supply Chain** section of the sidebar, click **Tools Library**.

## Create a tool model

1. On the **Tools Library** page, click **Create Tool**.
2. Enter a **Tool Number** and **Revision** (both required).
3. Optionally add a **Description**, one or more **Subtypes**, and a **Maintenance Interval**.
4. Click **Create Tool**.

ION opens the new tool model’s detail page.

## Categorize tools with subtypes

Add [subtypes](https://docs.firstresonance.io/build-hardware/tools#subtypes) in the **Subtypes** field when you create a tool model or from the tool model’s detail page; type a name and select an existing subtype, or create a new one on the spot.

## Set a maintenance interval

Enter the [maintenance interval](https://docs.firstresonance.io/build-hardware/tools#maintenance-interval-and-status) as a list of `{number}{unit}` segments using this shorthand:

| Shorthand | Unit |
| --- | --- |
| `d` | Day |
| `h` | Hour |
| `m` | Minute |

For example, `1d 2h 20m` is an interval of 1 day, 2 hours, and 20 minutes.

## Edit a tool model

Open a tool model from the Tools Library to reach its detail page. Fields in the **Tool Information** card edit in place and save automatically, including subtypes and any custom attributes.

- To revise the model, click **Create New Revision**. ION creates the next revision and opens it.
- To remove the model, open the **…** menu and click **Delete**. Deletion can’t be undone.

## Comment on a tool

Comments let you discuss a tool model with your team.

1. On the tool model, find the **Comments** section.
2. In the **Add a comment…** field, type your comment. You can format the text and `@`-mention a user to notify them directly.
3. Click **Comment**.

To reply to a comment, use its reply control. To close a thread, resolve it; a resolved comment can be reopened later.

## Attach files to a tool

Attach files such as images, PDFs, and STEP/STP files, up to 100 MB each.

1. On the tool model, find the **Attachments** section.
2. Add a file by dragging it onto the upload area, clicking to browse, or taking a photo on a device with a camera.

To remove a file, click its delete control and confirm.

When a file is attached through a file-type custom attribute, the delete dialog offers **Remove from attribute** (keeps the file but detaches it) and **Delete permanently**.