Aim:

To refine and improve your previous 3D model using peer feedback and design thinking principles.

Requirements

• Blender (latest version)

• Feedback notes from teacher or classmates

• Rendered images or file of your previous 3D model

Step-by-Step Process

Step 1: Review Your Old Design

Open your 3D model from the previous lesson (for example, your empathy-based object or tool).
Look at it with fresh eyes and ask:

• Does it look balanced?

• Is it functional?

• Would it be easy to print and use?

Write down three things you like and three things you’d like to improve.

Step 2: Get Feedback

Show your design to:

• A peer (classmate or friend), or

• A mentor (teacher, parent, or designer).

Ask specific questions such as:

• “Is it comfortable to use?”

• “Does it look sturdy or too thin?”

• “How could I make it more appealing?”

Note their feedback in your observation sheet.
This helps you see your design from a new perspective — the user’s point of view.

Step 3: Analyze and Plan Improvements

Look at your feedback and decide what changes make sense.
Here are some common areas for improvement:

• Shape & Form: Add curves, smooth edges, or balance proportions.

• Functionality: Resize holes, adjust thickness, fix parts that may break.

• Visual Appeal: Add symmetry, color, or cleaner geometry.

• Ergonomics: Make it easier or more comfortable to hold or use.

Draw a quick revision sketch or note your new ideas before editing in Blender.

Step 4: Make the Changes in Blender

1. Open Blender and load your model.

2. Enter Edit Mode (Tab) to tweak your design.

3. Use these tools:

   • Scale (S): Resize parts proportionally.

   • Grab/Move (G): Adjust position for better alignment.

   • Loop Cut (Ctrl + R): Add details or control shape edges.

   • Subdivision Surface Modifier: Smooth sharp edges.

   • Boolean Difference: Create cut-outs or new openings.

4. Make small, thoughtful tweaks — don’t change everything at once.

5. Render after each major adjustment to visually compare versions.

Step 5: Compare Before and After

Render both versions — “Before” and “After”.
Display them side-by-side and write a short reflection:

“My design improved by ________. Now it is more ________ and easier to ________.”

Optional: Ask your peer again if the revised version solves the earlier issues.

Step 6: Final Export

When satisfied:

• Save the final version as .blend and export as .STL.

• Name it clearly (e.g., key_holder_v2.stl).

Add both renders to your Design Portfolio (see Lesson 6).