LDraw2Print

A streamlined tool to convert LDraw (.ldr, .mpd) Lego models into 3D printable .obj files. It automatically separates parts by color, strengthens studs for printing, and generates step-by-step building instructions.

Features

• One-Drag Conversion: Drag and drop your .ldr file onto the executable/script to convert.
• Diet Blender: Bundles a stripped-down, lightweight version of Blender 4.5 (~700MB).
• Auto-Strengthening: Welds studs to brick bodies to prevent snapping during printing.
• Smart Organization: Exports parts into folders named by their color code.
• Building Instructions: Optionally generates high-quality PNG images of each building step (and soon PDF manuals!).

Credits & Licenses

This project relies on:

• Blender (GPLv3): https://www.blender.org
• ImportLDraw (GPLv2) by TobyLobster: https://github.com/TobyLobster/ImportLDraw
• xhtml2pdf (Apache 2.0): https://github.com/xhtml2pdf/xhtml2pdf
• ReportLab (BSD): https://www.reportlab.com

This project is licensed under GPLv3.

Usage

1. Download the latest release.
2. Drag and drop your .ldr file onto LDraw2Print.bat.
3. Follow the prompt to generate building instructions (y/n).
4. Find your exported 3D files in export_output.
5. Building Manual: Open export_output/instructions/manual.html in your browser. To save as PDF, press Ctrl + P and select "Save as PDF".