Professional STEP/STP CAD Import for Blender

✅ NOW COMPATIBLE WITH BLENDER 5.1

Updated to support the latest Blender. MStep now works across Blender 4.0 through 5.1 — the correct CAD engine is loaded automatically to match your Blender version, with no setup required.

⚠️ WINDOWS ONLY
This version works exclusively on Windows 10/11 (64-bit).
macOS and Linux versions are not yet available. Please ensure you are using Windows before purchasing.

MStep brings professional CAD workflows into Blender with precision geometry import, automatic unit conversion, and color preservation.

Key Features

• High-Precision Import - Built on Open CASCADE Technology (OCCT), the industry-standard CAD kernel
• Works Across Blender Versions - Supports Blender 4.0 through 5.1; bundles the matching CAD engine for each Blender's Python and selects it automatically
• Automatic Unit Detection - Converts millimeters, centimeters, meters, inches, and feet automatically
• Color & Material Preservation - Imports RGB colors and creates Blender materials
• Adjustable Mesh Quality - Control polygon density with quality slider (1-100)
• Standalone Installation - No external dependencies or pip installations required

Who It's For

• Product designers and mechanical engineers
• Architects integrating engineering components
• 3D artists working with industrial designs
• Anyone needing reliable STEP/STP file import

Technical Specifications

• Blender: 4.0 – 5.1 compatible (includes the latest Blender 5.1)
• Platform: ⚠️ WINDOWS 10/11 (64-bit) ONLY - Does NOT work on macOS or Linux
• Note: macOS and Linux versions are not yet available
• Format: STEP/STP (ISO 10303-21)
• CAD Engine: PythonOCC 7.7.2 & 7.9.3 with Open CASCADE Technology (auto-selected to match your Blender version)

What's Included

• Complete standalone addon with bundled libraries
• Intuitive import dialog with adjustable settings
• Sidebar panel for quick access
• Professional support via email

Licensing

MStep addon code is licensed under MIT. Includes LGPL-licensed libraries (OCCT and PythonOCC). Full license details available in addon preferences.

Support

Professional support via email. Contact: [email protected]