Worm Screw
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📝 Project Description: Pin-Locked Worm Screw
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Updated at source:
Model information
- Source
- Printables
- Category
- Mechanical Parts
- License
- Creative Commons — Attribution — Noncommercial
1. Introduction
This project consists of a 3D-printed worm screw with a locking pin, designed for mechanical transmission systems. The worm screw allows for rotational-to-linear motion conversion or for gear reduction in small-scale mechanisms.
2. Project Objective
The aim is to provide a compact, easy-to-print worm gear solution with integrated pin-locking capability, improving stability and alignment in DIY or educational mechanisms.
3. Required Materials
3D printer (FDM recommended)
Filament: PETG, Nylon, or PLA+ (for better durability, heat resistance, and strength)
Metal or plastic lock pin (depending on your needs)
Optional: lubricant for smoother motion
Tools: Allen key or small screwdriver (for assembly), pliers (for pin insertion)
4. Technical Description
The worm screw is modeled with a central bore to accommodate a locking pin, preventing unwanted axial or rotational displacement.
Compatible with matching worm gears (not included in this STL).
Designed for low to moderate torque systems.
Precision of print is critical for good meshing and function.
File: vis sans fin à goupille.stl
5. Assembly and Usage Notes
Print with 100% infill for best strength.
Use supports if necessary depending on printer orientation.
Insert the pin after positioning the worm screw in the housing or gear assembly.
Ensure the pin fits tightly without splitting the part.
Recommended layer height: 0.1–0.2 mm for precision
Optional: Sanding and lubrication can enhance rotation smoothness.
6. Safety and Precautions
Do not use in high-load or high-speed applications.
Avoid applying excessive torque – this component is intended for light mechanical uses.
Use durable filament and test before final assembly.
Keep out of reach of children (pin and small parts may be dangerous if swallowed).
7. Possible Applications
Educational gearboxes and prototypes
Robotic arms or compact transmission systems
Arduino/ESP32-controlled mechanisms
Demonstrations of gear reduction and motion translation
8. Legal Disclaimer
⚠ Warning: This part is intended for educational and personal projects only. I take no responsibility for any damage, injury, or failure resulting from its use. Use at your own risk.
9. Conclusion
This worm screw with integrated pin locking is a practical solution for DIY mechanical systems and learning projects. Easy to print and assemble, it offers flexibility and reliability when used within its design limits.
Created by: Sasha Scarabello
Date: 07/26/25