Model Builder model design file
File type: 3d graphics, CAD-CAM-CAE file
An MB4 file is a model design created and saved by Model Builder.
It contains the design data for a paper model, such as a model of a house.
File type category:
3d graphics, CAD-CAM-CAE file
Date updated: October 24, 2026
MB4 files are associated with Model Builder, a Microsoft Windows application developed by Evan Designs. The software allows users to create paper models, including paper models of houses.
An MB4 file stores a model design created in Model Builder. It is a working design file rather than a general-purpose 3D graphics or CAD interchange file.
The format is intended for use with Model Builder on Windows. Model Builder is the practical application for reopening and continuing to edit an MB4 design.
Open an MB4 file with Model Builder on Microsoft Windows. Use the application's file-opening command and select the file.
There is no established general-purpose converter for the MB4 file format. Open the file in Model Builder and use the software's available print or export functions to produce a usable paper model.
Software applications that can open mb4 files:
Microsoft Windows
Software applications that can edit mb4 files:
Microsoft Windows
Software capable of saving mb4 files:
Microsoft Windows
Software apps that create mb4 files:
Microsoft Windows
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