Blender Bim

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Create beautiful, detailed, and data-rich OpenBIM models with Blender. BlenderBIM is a free and open-source Blender add-on for architects and engineers to create IFC 3D building models. An add-on for beautiful, detailed, and data-rich OpenBIM with Blender. Experience rapid free-form and parametric modeling in Blender, a popular industry heavyweight in 3D content creation trusted by NASA, Hollywood, and Ubisoft. Create data-rich IFC4 data to future-proof your BIM data and integrate with the rest of the OpenBIM ecosystem.


IfcOpenShell is an open source (LGPL) software library that helps users and software developers to work with the IFC file format. The IFC file format can be used to describe building and construction data. The format is commonly used for Building Information Modelling.

IfcOpenShell uses Open CASCADE (the Open CASCADE Community Edition) internally to convert the implicit geometry in IFC files into explicit geometry that any software CAD or modelling package can understand.

Please note that IfcOpenShell is a work in progress. At the moment only files with the .ifc extension are supported (technically known as IFC-SPF). Support for IFC-XML and IFC-ZIP will be added in the future. Please note that at this moment IfcOpenShell may not fully understand all geometry that is present in an .ifc file, rest assured that it’ll do the very best it can and support for the other types of geometry is already on its way.

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  • Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, video editing and 2D animation pipeline. Blender Foundation; Blender Institute.
  • Requires glibc 2.17 or newer. Suits most recent GNU/Linux distributions. Blender 2.92.0 was released on February 25, 2021md5 sha256.

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Currently on the menu is an importer for Autodesk 3ds Max, an importer for Blender and a stand-alone application to convert an IFC file into a Wavefront .obj file. Furthermore, software developers are explicitly encouraged to use the IfcOpenShell library in their own applications.

Frequently Asked Questions

What's with the name? Ifc Opens Hell?
No, you're not reading it correctly. An IfcOpenShell is one of the ways geometry can be described inside an Ifc file. Since the name reflects on the Ifc part, the open source part and the geometry part of the project, we figured we'd pick this as our name.
PS: No, we're not called openIfcShell either
Ok, so how do you make money with this?
We don't. Are you? How about sharing some of the pie or help out with development or testing!

Please visit the forums for additional support

One of the most useful options for architectural modeling in Blender is the ability to display lengths for edges. That way you can make 3d models and keep an eye on dimensions, with no need to measure them every time you want to know the size of an object.

Prior Blender 2.8 you would find the option to display such information about edges in the properties tab of the 3D View. In version 2.8 the Edge Length is on a new location.

To display lengths, you now have to use the Overlays options.

There you will see a field called “Measurements” with the Edge Length option. If you enable the visualization of lengths, you will start to see the numbers right next to each selected edge.


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By using the unit settings for modeling in Blender, you will also see the values with the proper symbol. You have to select one or multiple edges to see each value.

It could meter for the metric system:

Or feet and inches for the imperial system:

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For people starting with Blender 2.8 with a background in 2.7x, it may become confusing to find such options because they are now “hidden” in new menus.

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Now you know how to enable the visualization of lengths for precision modeling in Blender 2.8.

If you want to learn more about how to work with precision modeling in Blender using the imperial system, you should take a look at our ebook about modeling with feet and inches. It has more than 100 pages with modeling examples for architecture.

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