3D Benchy – The Original 3D Printing Test Boat

Public Domain FDM Calibration Model

The 3DBenchy, also known as the Benchy test boat, is a legendary 3D printing calibration model used worldwide to evaluate printer performance and fine-tune settings.

This iconic boat is designed to test multiple aspects of FDM printing in one compact model, including overhangs, bridges, surface quality, cooling performance, layer adhesion and dimensional accuracy. Thanks to its clever design, even small printing issues become immediately visible.

Now released as public domain, 3DBenchy can be freely shared, printed and used by the entire 3D printing community. It remains one of the most reliable and recognized benchmarks for testing PLA and PETG filaments.

Whether you are setting up a new printer, tuning a new filament or comparing print settings, 3DBenchy is an essential tool for consistent and repeatable results.

Recommended Materials

• PLA
• PETG

FDM Printing Recommendations

• Layer height: 0.2 mm
• Nozzle: 0.4 mm
• Supports: Not required
• Print speed: Medium
• Cooling: Enabled

The model can be printed at different scales, but the original size is recommended for standard benchmarking.

What This Model Tests

• Overhang performance
• Bridging quality
• Stringing and oozing
• Layer adhesion
• Surface finish
• Dimensional accuracy

Design Features

• Iconic calibration boat design
• Compact and fast to print
• No supports required
• Ideal for PLA and PETG
• Public domain model

Who Is This Model For?

• Beginners setting up their first printer
• Experienced makers tuning new filaments
• Anyone comparing print settings or machines
• FDM users looking for a reliable benchmark

Public Domain Notice

3DBenchy is released as public domain and is free to use, share and distribute without restrictions.

Final Note

If this print helps you improve your printer setup, consider sharing your results with the community. Calibration is the key to great prints.