How to Make a 3D Printed Animatronics Sea Turtle

Many of us are aware of the movement to stop using single-use plastics, like straws, to protect sea turtles, but the dangers don’t end there. Marine debris, plastic bags, abandoned fishing nets, and discarded hooks all pose serious threats to these animals. While human technology advances rapidly, wildlife can’t adapt as quickly to avoid these new hazards. For turtles, a plastic bag can look just like the jellyfish they love to eat, with deadly consequences.

Moved by the beauty of these creatures and the challenges they face, I wanted to capture their graceful, effortless movement to inspire awareness. So, I set out to design a piece in Fusion 360, using an origami turtle as my starting point. I added intricate details and a movable mechanism to mimic the gentle sway of a turtle’s limbs and neck.

Moreover, this technique allows you to create other “flying” creatures, like bats, butterflies, and even dragons! The best part? You only need access to a 3D printer and a few basic tools to make it all happen right at home—how amazing is that?

This Instructables is especially ideal for students interested in animatronics, as it requires creativity and problem-solving at every stage. It’s not only about building something beautiful but also about experimenting, innovating, and bringing unique ideas to life. Whether you're new to animatronics or looking to expand your skills, this project is the perfect hands-on way to dive in!

For the supplies you are required-

1. 3D Printer
2. Fusion 360
3. Sandpaper (optional) – to smooth rough 3D-printed edges.

1. Begin by downloading the STL files for the Flying Sea Turtle Automaton that I have shared.
2. You can open these files in Fusion 360 to make any modifications if desired, allowing you to customize the design to your preferences.
3. Once ready, export the files from Fusion 360 as STL files if you made changes.
4. Next, open slicing software like Cura or PrusaSlicer and import the STL files.
5. Adjust print settings such as layer height, infill density, and print speed for durability.
6. Position the components in the slicer to optimize orientation and minimize supports.
7. Finally, generate the G-code file and save it to an SD card or send it directly to your 3D printer

1. Load the G-code into your 3D printer and start the printing process.
2. Monitor the print closely for proper adhesion and any potential issues.
3. Once printing is finished, allow the parts to cool before carefully removing them from the print bed.

1. Allow the printed parts to cool completely before attempting to remove them from the print bed. This helps prevent warping or damage to the pieces.
2. Carefully detach the parts from the print bed using a scraper or spatula, ensuring that no pieces break.
3. Inspect the printed components for any support structures or rafts. Use pliers or a hobby knife to carefully remove any excess material.
4. Sand down rough edges or surfaces if necessary for a smoother finish. This will help with the assembly and improve the overall aesthetic of the automaton.

1. Begin by attaching the turtle body, which is printed as one solid piece, to the turtle shell.
2. Ensure that the body fits snugly inside the shell without obstruction.
3. Use screws or glue to secure the body to the shell for stability.
4. Test the flexibility of the limbs and neck to confirm natural movement as they should articulate freely.

1. Print the crank mechanism along with any necessary rods or gears separately.
2. Ensure precision in printing for a snug fit inside the turtle’s shell.
3. Monitor the printing process to ensure all components are correctly printed.

1. Install the crank mechanism inside the turtle's shell, following design specifications.
2. Connect the rods from the crank to the limbs and neck to ensure synchronized movement.
3. Make adjustments as needed for smooth operation without tightness or looseness.

1. Join the turtle body and the crank mechanism together securely.
2. Double-check the crank's operation to ensure it moves the limbs and neck as intended.
3. Ensure the overall assembly feels stable and is easy to handle.

1. Secure any loose connections with additional glue or screws if necessary.
2. Trim any excess material from the parts for a clean and polished finish.
3. Conduct a final test of the entire mechanism to ensure smooth operation.
4. Finally, display your completed Flying Sea Turtle Automaton.
5. Enjoy sharing your craftsmanship and creativity with others!
6. Consider exploring variations or creating other “flying” creatures like bats or butterflies using the same techniques.