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Easy 3D LEGO Building

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JBrickBuilder is a Java based virtual building with LEGO bricks.
Full 3D view and editing for models and sub-models, fast and easy to use.

JBrickBuilder Web Site


  • Java based, works on any platform with JVM 6 or newer
  • Easy to use
  • Autoconnect bricks
  • Reads DAT, LDR, MPD, LCD, L3B file formats
  • Uses Standard LDraw part library
  • Save in LDR or MPD format
  • Flexible parts editing
  • Building step editor and player


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Additional Project Details

Intended Audience

Education, End Users/Desktop

User Interface

Java Swing, OpenGL

Programming Language




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