Object Builder

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Basic information

Bohemia Interactive
Arma 3
Part of Arma 3 Tools package on Steam


This tool is used to create, edit and configure 3D models made for Arma 3. Object Builder is the successor to Oxygen 2.
Buldozer (the viewer) might not work as expected if you run Object Builder from Steam or from Arma 3 Tools Launcher if this last was ran from Steam. The best case of use is to run Arma 3 Tools Launcher from the installation directory and run Object Builder from it. It also includes Material Editor (material tweaking) and O2Scripts (automation).


Line call:


Bohemia Interactive End User License Agreement
See also:
Oxygen 2 - Manual, Oxygen 2 - UV Editor, Oxygen 2, Buldozer Manual

Additional information

Supported formats


  • P3D (file with model, supported are nonbinarized version[MLOD])
  • 3DS (legacy 3d model file format)
  • ASC (ASCII 3D object)
  • SDA (Vicon Surface Data)


  • 3DS (legacy 3d model file format)
  • OBJ (3D Object Format)
  • FBX (Autodesk FBX)
  • ASF (Acclaim Skeleton Format, MoCap)
  • BVH (Biovision Hierarchy, FilmBox)


  • 3DS
  • MDA
  • FBX


  • TGA (24 bit / 32 bit with alpha channel)
  • GIF (with or without alpha channel)
  • PAA,PAC (textures formats using in BI's game engines)


  • P3D (nonbinarized)

How to use it

You can open any supported model using menu File / Open or drag and drop the model file icon into the main window of Object Builder (tip: you may assign P3D file extensions to Object Builder application using Windows desktop).

You can make empty model using menu File / New.

You can save (save as) the file only into the P3D format.

Preview of model can be showed by Viewer Tool (Buldozer).

Viewer setup

parameters for the viewer.

You can use Buldozer Configurator or define your settings manually:

Path to viewer (Commands in [] are optional; leave [] away when using that command): P:\Buldozer.exe -buldozer [-window] [-noland] [-cfg=PathToConfig] [-maxmem=1024]

-window : Starts Buldozer in window instead of fullscreen.

-noland : Buldozer will not load a island.

-cfg=PathToConfig : Forces Buldozer to use a certain config.

To run viewer correctly you need a Arma 3 successfully installed on hard drive. Using P drive tool prepares P: drive with buldozer.exe

Known issues: Running Object Builder directly from Steam may prevent attaching of Buldozer. Using shortcut or running directly from app directory is a possible workaround until the issue is fixed.