Library

The Library stores reusable drawing templates that can be placed into your projects. Unlike typical CAD libraries that contain only component metadata, LoomCAD libraries contain complete drawing sheets — including components, bundles, wires, dimensions, and annotations.

Overview

Library allows you to:

• Save complete drawing templates for reuse (components, bundles, bundle splices, wires — any drawing elements)
• Store reusable scripts (human-written or AI-generated) to run on any project
• Fetch templates into your current project
• Share standardized designs across projects
• Build a catalog of reusable harness sections and component groups

Each library sheet is a reusable template that can include:

• Single components with dimensions and images
• Multi-component assemblies with pre-wired connections
• Complex sub-harnesses with bundles and routing
• Any combination of drawing elements

This makes LoomCAD libraries function as drawing templates or prototypes rather than simple part catalogs. When you place a library item, you get the entire sheet contents — not just a single component.

Library template with multiple components, bundles, and wires

Use cases:

• Standard assemblies — pre-wired connector groups that repeat across projects
• Reference designs — baseline harness sections to adapt
• Company standards — approved component + labeling combinations

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Fetching from Library

From Inspector

1. Select a component on canvas
2. Open Inspector
3. click Library button

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Library and DigiKey buttons in Inspector

Fetch Dialog

library-dialog.png

Fetch from library dialog

Element	Description
Select library	Dropdown to choose library source
Filter components	Text field to filter component list by name
Component list	Available components from selected library
CANCEL	Close dialog without importing

library-dialog-dropdown.png

Library source dropdown

Library sources:

• Current project — components saved in the current project
• Shared libraries — common component libraries (e.g., Prototypes, Std components)

library-dialog-filter.png

Library with selected source and filter applied

Type in the filter field to search components by name.

To import:

1. Select library from dropdown
2. Filter or browse component list
3. click on component to import it

After Fetching

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Save and Reset buttons after fetch

After fetching, Save and Reset buttons appear in Inspector:

Button	Description
Save	Save fetched data to the component
Reset	Discard fetched data and revert changes

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Creating a Library

Library is a special project type where each sheet represents one reusable template.

To create a library:

1. Go to Start Screen
2. click next to Libraries
3. Each sheet in the project = one library template

To add a template:

1. Add a new sheet to the library project
2. Draw your component(s), dimensions, labels, etc.
3. Use Attach All to Anchor to link all elements to a single anchor (so they move together when placed)
4. Name the sheet — this becomes the library item name

To edit templates:

• Open the library project
• Navigate to the sheet
• Modify the drawing

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Related Topics

• Inspector - Fetch and Save buttons
• DigiKey Integration - Import from DigiKey
• Component - Component properties