Aim:

To design a 3D object that fits comfortably in the human hand and serves a practical function (like a stylus grip, bottle handle, or remote case).

Requirements:

• Computer with Blender

• Caliper or ruler (for measuring finger or hand width)

• Reference object (pen, phone, toothbrush, etc.)

• Sketchbook (optional) for quick design planning

Step-by-Step Process

Step 1: Study and Measure

1. Choose an object you hold daily — for example, a pen, remote, or phone.

2. Observe how your fingers curve around it.

3. Measure:

   • Hand width and finger span

   • Diameter of grip (comfortable thickness)

   • Length of area held

4. Record these values — they will help you scale your model correctly in Blender.

Step 2: Start Modeling in Blender

1. Open Blender and start a new project.

2. Add a Cylinder or Cube mesh depending on your design idea.

3. Go to Edit Mode and scale the object according to your measurements.

4. Turn on X-axis Mirror Modifier to make both sides symmetrical as you design.

Tip: For a pen or stylus, the diameter might be around 10–15 mm. For a phone grip, about 60–80 mm wide.

Step 3: Shape for Comfort

1. Use the Subdivision Surface Modifier to make smooth, rounded shapes.

2. Adjust vertices gently to follow the natural curve of a hand.

3. Use Bevel tool (Ctrl+B) on sharp corners to make edges comfortable and soft.

4. Think about finger placement — add slight indents where fingers might rest.

Design Insight: Rounded forms feel softer and safer; sharp edges may look modern but can feel uncomfortable.

Step 4: Test Functionality (Virtually)

1. Switch to Object Mode and view your model from different angles.

2. Compare it with your hand’s photo or a real object.

3. Adjust size and curvature based on how a user might hold it.

4. (Optional) Add a texture or grip pattern using sculpting or displacement maps.

Step 5: Final Touches and Rendering

1. Add material color and subtle texture to make it look realistic.

2. Insert light and camera for a presentation-ready render.

3. Press F12 to render your ergonomic design.

Save and label your design as “Ergonomic Grip Design – [Your Name]”.