English | 中文

Import CAD Model for Blender

A Blender addon that enables import of CAD files (STEP/IGES formats) through conversion to mesh formats using Mayo conversion toolkit.

Plugin Preferences

Plugin Demo

Features

• 🚀 CAD Format Support

  • Import .step, .stp, .iges, .igs files
  • Supports both drag-and-drop and traditional file import

• ⚙️ Conversion Options

  • Choose between GLTF or OBJ
  • Adjustable mesh quality levels (Very Coarse → Very Precise)
  • Custom scaling factors (0.0001x to 100x)

• 🧹 Automatic Cleanup

  • Optional deletion of intermediate files
  • Duplicate material cleanup system

• 🖥️ Workflow Optimization

  • Real-time conversion progress monitoring
  • Preset system for frequent configurations
  • 3D viewport integration

System Requirements

❗ Windows Only
This addon requires Windows

1. Mayo Conversion Tool
   Download Mayo-x.x.x-win64-binaries.zip or Mayo-x.x.x-win64-installer.exe from:
   https://github.com/fougue/mayo/releases

2. Blender

   • Blender:4.0 and newer

Installation

1. Download the latest .zip file from Releases.

2. In Blender, go to Edit > Preferences > Add-ons.

3. Click Install... and select the downloaded .zip file.

4. Enable the checkbox next to "Import CAD Model ".

5. Configure Mayo Path

   # In Blender Preferences:
   Add-ons > Import CAD Model 
   Set path to mayo-conv.exe in addon preferences

Usage

Basic Import

1. File Import

   File > Import > STEP/IGES (.step/.stp/.iges/.igs)
   

2. Drag-and-Drop

   • Drag files directly into 3D Viewport

Import time test

Conversion Settings

Parameter	Description
Output Format	.gltf (hierarchy) / .obj (collections)
Mesh Quality	Controls BRep conversion precision (trade-off between speed and accuracy)
Global Scale	Adjust model scaling factor (0.0001-100)
Post-Process	Auto-delete temp files, clean duplicate materials

Languages supported

• English
• 中文
• 日本語

Todo

• Support opening multiple models at once
• Automatically update models (instead of re-importing them)

Disclaimer
This addon is not affiliated with the Mayo project. CAD conversion quality depends on Mayo's core functionality.