3DP Bench

The 3DP Bench (commonly referring to the 3DBenchy) is the ultimate diagnostic tool for 3D printers. Inspecting specific areas of this model allows you to isolate and fix hardware or software issues. Overhangs and Cooling

The boat hull features challenging overhangs that test your cooling fan efficiency.

The Issue: Drooping, sagging, or rough surfaces on the front bow.

The Fix: Increase cooling fan speed or lower printing temperatures by 5°C. Dimensional Accuracy

Specific parts of the benchy measure exact dimensions to test your printer’s calibration. The Issue: The cargo box is not exactly 12mm x 12mm.

The Fix: Calibrate your printer stepper motor E-steps and XYZ steps. Bridging and Temperature

The open cabin windows and bridge roofs test how well your filament spans open gaps.

The Issue: Sagging lines or “spaghetti” under the horizontal window frames.

The Fix: Enable bridging settings in your slicer or decrease extrusion temperature. Retraction and Stringing

The distance between the cabin doors and the chimney requires the printer to stop extruding while moving.

The Issue: Fine, hair-like plastic whiskers between the cabin pillars.

The Fix: Increase retraction distance by 0.5mm or increase retraction speed. First Layer Adhesion

The bottom of the boat features inverted text reading “CT3D.xyz”.

The Issue: Blurry text, lifting corners, or the print detaching entirely.

The Fix: Level your print bed and decrease the Z-offset slightly. Extrusion and Ghosting

The smooth vertical surfaces of the cabin reveal mechanical stability issues.

The Issue: Ripples around windows (ghosting) or inconsistent lines (under/over-extrusion).

The Fix: Tighten your belts and calibrate your filament flow rate.