November 16, 2025
Description
This model is a fully 3D-printable motorized tugboat, designed as a fun DIY project for kids and adults. It features a simple mechanical drive using a small DC motor, AA batteries, a switch, and a rear propeller. The deck includes several playful details such as a cabin, small lifeboat, handrails, and a movable crane.
The hull is designed as two separate parts:
Bottom hull (green) – holds the motor, battery compartment, wiring, and propeller shaft
Top deck (orange) – attaches without screws and holds all decorative elements
The model can be printed in multiple colors for a lively, toy-like look.
Features
Working DC motor and propeller drive - standard dc motor with a 2 mm axle
Room inside the hull for two AA batteries
Easy wiring with a simple ON/OFF switch - 11 mm x 6 mm switch
Decorative cabin, chimney, lifeboat, and crane arm
Fully printable on any FDM printer
You need battery contacts, wiring, motor and switch to get it working.
If the propeller shaft doesn fit the motor shaft, enlarge the hole with a 2 mm wood drill bit
License:
Standard Digital File License
Johnny
