You can’t create a 3D model directly in Substance Painter—it’s a texturing tool, so you need to import a pre-made model from 3D software like Blender, Maya, or 3ds Max.
Substance Painter’s core function is adding textures (color, roughness, normal maps) to existing models, not building them. The typical workflow is: - Model in another program (e.g., Blender). - Export as OBJ or FBX. - Import into Substance Painter. - Paint surface details.
If you don’t have a model yet, try free tools like Blender to create one—once exported, you can start texturing in Substance Painter.