CAD Sketcher is a constraint-based geometry sketcher extension for Blender that enables creation of precise 2D shapes by applying geometric constraints such as tangent, distance, angle, and equality relationships.
The tool solves the problem of creating accurate 2D sketches within Blender's 3D environment by letting users define geometric constraints rather than manually positioning elements. Sketches remain fully editable and support a non-destructive workflow, meaning changes to constraints automatically update the geometry without destroying the underlying design intent.
Anyone adopting this tool should know it is marked as experimental and still in development, so production use requires backups. It requires Blender 5.0 or later. The project suits designers and engineers who need parametric 2D sketching capabilities integrated directly into Blender's modeling pipeline, particularly those accustomed to constraint-based CAD workflows. Installation is available through Blender's extension system with automatic updates, or through alternative methods documented in the installation guide.
Development activity shows active engagement with the user community through a dedicated Discord server and structured feedback channels for bug reports and feature requests. The project maintains a public roadmap and accepts contributions from developers. Donations are accepted through Open Collective and GitHub Sponsors, indicating ongoing resource needs for continued development.
