Pepr3D is an intuitive, free, and open-source 3D painting tool for coloring models intended for colorful 3D printing.

• Primarily, we support multi-material 3D FDM printers such as Prusa printers with their multi-material upgrades.

• Import existing single-color 3D models in various formats (.obj, .stl, and more), e.g., from Thingiverse.

• Color the model surface with intuitive tools such as triangle painter or paint bucket that follow the triangle topology.

• Paint details and texts using brush and text editor tools. They are not limited by the original topology!

• For faster painting, segment the model automatically or semi-automatically.

• Export the final result into individual .stl files using our easy-to-use export assistant.

• The exported files can be printed directly via the official Prusa Slicer (GitHub) using a multi-material Prusa 3D printer.

Model import	Triangle painter

Paint bucket	Brush

Text editor	Export assistant

Pepr3D was originally created as a university project at the Faculty of Mathematics and Physics, Charles University within the Computer Graphics Group with the cooperation of Prusa Research.

• Štěpán Hojdar
• Tomáš Iser
• Jindřich Pikora
• Luis Sanchez

• Oskár Elek, CGG @ MFF CUNI, now Creative Coding @ UC Santa Cruz

• Vojtěch Bubník, Prusa Research
• Jaroslav Křivánek, CGG @ MFF CUNI
• Tobias Rittig, CGG @ MFF CUNI

The "Bulbasaur" model in the screenshots and photos by Agustin Flowalistik. More sample models can be downloaded from the Releases page. Third-party libraries used in the project are documented in the LICENSE.md file.