Blender STEP/IGES/BREP Import I Octopus
🐙 Octopus STEP/IGES/BREP Import for BlenderImport STEP, IGES & BREP CAD files directly into Blender.Bring professional CAD models into Blender with a simple File → Import workflow.Octopus STEP/IGES/BREP Import allows you to import STEP/STP, IGES/IGS, and BREP/BRP files as Blender polygon meshes. Powered by FreeCAD, it automatically converts CAD solids into clean meshes ready for rendering, visualization, animation, editing, product design, and game asset creation.Current Version: 1.1.0🎯 Perfect For 🎨 3D Artists 🛠️ Technical Artists 🏭 Product Designers 📐 CAD Visualization 🎮 Game Asset Creation 🏗️ Engineering & Manufacturing Workflows ✨ Features ✅ Import .step, .stp, .iges, .igs, .brep, and .brp files directly into Blender ✅ Seamless File → Import integration ✅ Reliable CAD conversion powered by FreeCAD ✅ Adjustable Linear and Angular Deflection controls for mesh quality ✅ Import Scale option for millimeter- and inch-based CAD models ✅ Preserves object and assembly names whenever possible ✅ Automatic conversion logs for easier troubleshooting ✅ Optional temporary file retention for debugging ✅ Manual FreeCADCmd path configuration ✅ Windows helper tools to: Install FreeCAD via winget Refresh the detected FreeCAD path 🚀 Supported File Formats .STEP .STP .IGES .IGS .BREP .BRP 🚀 How It Works Install and enable the add-on. Install FreeCAD (or use the built-in Windows installer). Open File → Import → CAD (.step/.stp/.iges/.igs/.brep/.brp). Select your CAD file. Adjust tessellation settings if desired. Click Import. Within seconds your CAD model is converted into a standard Blender mesh, ready for: 🎬 Rendering 🏭 Product Visualization 🎞️ Animation ✏️ Mesh Editing 🧩 Kitbashing 🎮 Game Development 🖨️ 3D Printing Workflows 📦 Scene Layout & Scale Validation ⚙️ Import OptionsLinear DeflectionControls tessellation tolerance. Lower values → Higher detail → More polygons Higher values → Faster imports → Lighter meshes Angular DeflectionControls how accurately curved surfaces are tessellated.Lower values preserve curved surfaces with additional geometry.Import ScaleScales the imported mesh after conversion.For many CAD files authored in millimeters, a value of 0.001 is recommended for Blender's meter-based scenes.Keep Temporary FilesKeeps the generated OBJ files and conversion logs after successful imports for debugging or support.⚙️ Requirements Blender 4.3 or newer FreeCAD installed locally FreeCADCmd detected automatically or configured manually On Windows, the add-on includes: Install FreeCAD with winget Refresh FreeCAD Path The installer opens a visible terminal so you can monitor the installation process.📦 Included Blender Add-on FreeCAD conversion helper Automatic FreeCAD detection Manual FreeCADCmd path configuration Windows FreeCAD installer helper Import logging system 💡 Why FreeCAD?Blender cannot natively import boundary-representation CAD formats such as: STEP IGES BREP Octopus STEP/IGES/BREP Import uses FreeCAD behind the scenes to read CAD geometry, tessellate it into polygon meshes, and automatically import the result into Blender.No external conversion workflow is required.🎯 Best Use CasesPerfect for: Product rendering CAD visualization Hard-surface reference imports Scene layout Scale verification Mesh cleanup after CAD conversion Preparing CAD assets for games or real-time engines ⚠️ Important Notes Imports polygon meshes, not editable CAD/NURBS solids. The add-on is not a replacement for a CAD application. Material and metadata preservation depends on the source file and FreeCAD. FreeCAD remains a required dependency. ❓ Frequently Asked QuestionsWhich file formats are supported? .STEP .STP .IGES .IGS .BREP .BRP Does it import editable CAD solids?No.CAD geometry is converted into standard Blender polygon meshes.Why is FreeCAD required?Blender does not include a CAD kernel capable of reading these boundary-representation formats.FreeCAD provides the CAD importers and tessellation engine used by the add-on.Can I install FreeCAD from inside Blender?Yes (Windows only).Simply click Install FreeCAD with winget in the add-on preferences.What if FreeCAD isn't detected?Use Refresh FreeCAD Path, or manually select the FreeCADCmd executable in the add-on preferences.Which Blender versions are supported?Blender 4.3 and newerCan I control mesh quality?Yes.Use Linear Deflection and Angular Deflection during import. Lower values → More detail Higher values → Faster imports Why is my model too large or too small?Many CAD applications use millimeters, while Blender uses meters by default.Adjust the Import Scale setting (typically 0.001 for millimeter-based models).Does the add-on preserve assemblies?Object and assembly names are preserved on a best-effort basis, depending on what FreeCAD exposes from the source file.Are materials preserved?Material preservation is not guaranteed.The primary goal of the add-on is reliable geometry conversion.❤️ TroubleshootingFreeCADCmd isn't foundOpen the add-on preferences. Install FreeCAD using Install FreeCAD with winget (Windows) Refresh the detected path Or manually select FreeCADCmd The mesh is extremely denseIncrease Linear Deflection or Angular Deflection.Higher values produce lighter meshes with fewer polygons.The imported scale is incorrectAdjust Import Scale.For millimeter-based CAD files, 0.001 is commonly the correct value.Import failsFailed imports automatically keep their conversion log.Enable Keep Temporary Files if you'd also like to retain the generated OBJ files after successful imports.Materials or metadata are missingMaterial and metadata support depends on both the CAD file format and FreeCAD's importer.The add-on focuses on producing accurate Blender mesh geometry.❤️ SupportIf you need assistance, please include: Blender version FreeCAD version (if known) Operating system Import settings used Conversion log (if available) This information helps diagnose import issues much more quickly.
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