3D Printable Robot Arm Gripper

Servo Gripper for MG90S / SG90 | 3D Printable Robot Arm Gripper

Primary Keywords: servo gripper, MG90S gripper, SG90 gripper, robot arm gripper, 3D printable gripper

🧩 Files Included

• Printable STL files
• Editable STEP file (for customization and remixing)

🧠 Description – What It Is & Why It’s Essential

This 3D Printable Servo Gripper is a compact, lightweight robotic gripper designed specifically for MG90S and SG90 micro servo motors.
It is ideal for robot arms, DIY robotics projects, Arduino-based systems, and educational robotics kits.

The included STEP file allows full modification of finger length, grip width, mounting holes, and servo fitment—making this gripper highly adaptable for different robotic applications.

🚀 Key Features

• ✅ Compatible with MG90S & SG90 servos
• ✅ Includes editable STEP file
• ✅ Smooth articulated gripping mechanism
• ✅ Lightweight & compact design
• ✅ Easy to assemble and maintain
• ✅ Ideal for Arduino, ESP32, and Raspberry Pi projects
• ✅ FDM printer friendly
• ✅ Customizable & remix-ready

🔄 How to Use

Download → Print → Assemble → Mount Servo → Control → Grip

1. Print all STL parts
2. Insert MG90S or SG90 servo
3. Assemble fingers and linkage
4. Mount to robot arm or base
5. Control via microcontroller or servo tester

⚙️ 3D Printing & Manufacturing Settings

Manufacturing Method:

• ✔ FDM 3D Printing

Recommended Materials:

• PLA (easy & beginner-friendly)
• PETG (stronger, flexible)
• ABS (advanced users)

Print Settings:

• Infill: 15%
• Layer Height: 0.2 mm (0.16 mm for smoother finish)
• Supports: auto
• Resolution: Standard
• Walls: 2–3 perimeters

Estimated Print Time:
~2–4 hours depending on printer and speed

🔩 Assembly Instructions

• Use standard servo screws (included with servo)
• Use M3 screws & nuts if required for finger linkage
• Ensure servo is centered before final assembly

👉 Optional: Create step-by-step assembly guides with Cadasio.

⚠️ Safety & Compliance

• 🚫 Not food-safe
• 🚫 Not designed for heavy or high-force gripping
• ✅ Non-critical functional part
• ✅ Educational & prototyping use only
• ⚠️ Adult supervision recommended for children

🧪 Limitations

• Designed for micro servos only (MG90S / SG90)
• Not suitable for industrial or load-bearing use
• Grip force depends on servo torque and material used

💡 Inspiration & Use Cases

Designed for makers, students, robotics enthusiasts, and researchers, this gripper is perfect for:

• 🤖 Robot arms
• 📚 Educational robotics labs
• 🛠 DIY automation projects
• 🚁 Lightweight drone payload gripping (non-load-bearing)