You cannot directly open an .obj file in AutoCAD. AutoCAD does not natively support reading this 3D file format.
Why Can't You Open OBJ Files Directly in AutoCAD?
According to the information available, AutoCAD cannot read an .obj file directly. This means that if you have a 3D model saved in the .obj format, AutoCAD will not be able to open it directly like it would a .dwg file.
How to Get Your OBJ Model into AutoCAD
Since direct opening isn't possible, the standard method involves converting the OBJ file into a format that AutoCAD can read, such as a .dwg (AutoCAD Drawing) file.
The recommended tool for this conversion, as suggested, is Autodesk 3DS Max.
Using Autodesk 3DS Max for Conversion
The process typically involves these steps:
- Import the OBJ file: Open Autodesk 3DS Max and use its import function to bring your .obj model into the 3DS Max environment.
- Prepare the model (Optional but Recommended): You might want to check the model's geometry, scale, or materials within 3DS Max.
- Export as DWG: Use the export function in 3DS Max to save the model as a .dwg file. This process converts the 3D geometry from the OBJ format into a format AutoCAD understands.
Conversion Process Summary
| Source File Format | Intermediate Software | Target File Format | Destination Software |
|---|---|---|---|
| .obj | Autodesk 3DS Max | .dwg | AutoCAD |
Once you have the model saved as a .dwg file from 3DS Max, you can then open that .dwg file directly in AutoCAD.
Key Takeaway
The essential step is the conversion via a compatible software like Autodesk 3DS Max. This bridges the gap between the .obj format and AutoCAD's native .dwg format, allowing you to work with your 3D model in AutoCAD.
