Constraint-based sketcher extension for Blender that allows to create precise 2d shapes by defining a set of geometric constraints like tangent, distance, angle, equal and more. Sketches stay editable and support a fully non-destructive workflow.

⚠️ Experimental extension: This is still work in progress, don't use it on production files without a backup.

Minimum version: Blender 5.0

More than just an extension learn more: CADsketcher.com

Links:

• Preferred Download Method (This way we can update you about big updates and ask your opinion on big changes)
• Easy To Read Roadmap
• Github Roadmap
• Documentation
• Installation
• Discord
• Report A Bug
• Feature Request
• Contribute

Extension installation

Recommended: add the extension repository (auto-updates)

Adding CAD Sketcher as a remote repository lets Blender install and update it in-app:

1. In Blender go to Edit > Preferences > Get Extensions.
2. Open the repositories drop-down (arrow in the top-right corner) and choose Add Remote Repository.
3. Paste the URL below, tick Check for Updates on Startup, and confirm:

   https://hlorus.github.io/CAD_Sketcher-extensions/stable/index.json
   

4. CAD Sketcher now appears in the extensions list — press Install.

Other methods

For alternative installation methods (ZIP file, legacy add-on, git) and solver-dependency / Python-version notes, see the installation guide.

Usage

Follow the getting started guide to get familiar with the extension.

Donations ❤️

The project accepts donations through Open Collective.

Alternatively individual developers can link their donation links here:

hlorus - Lead Dev