Learn why thinking in 3D and visualizing transparent volumes is essential for any aspiring product designer. This friendly guide shares personal stories, practical tips, and easy training exercises to help you master 3D vision and sketch from imagination confidently.

Hi Design Sketchers!

I want to share something truly essential for anyone diving into the world of design sketching: training your 3D vision. This is a game-changer when you want to draw things fast and start creating from your imagination. Let me tell you how thinking in 3D, seeing things in transparency, and breaking complex shapes into simple volumes can transform your sketching journey.

Drawing the weasel sections to build it in transparency

1. Why 3D Vision Matters in Design

When I was a kid, drawing an elephant was all about tracing the contour on paper — flat and simple. But give that same kid some clay, and watch magic happen. The child rolls the clay into cylinders, cones, and spheres, assembling them into a volume. Suddenly, the elephant is no longer a flat sketch but a 3D object in space.

As designers, we do something similar, except we train our minds to see through things like they’re transparent volumes. This mental trick helps us decompose any subject into basic shapes like cubes, cylinders, and cones. Then, we can rotate and view these shapes from different angles, enabling sketching from imagination, not just copying.

2. Seeing in Transparency: The Designer’s Superpower

Imagine sketching with the illusion that your shapes are transparent. It sounds tricky, but when you practice, it becomes second nature. Visualizing internal structures and understanding how shapes overlap or intersect is like having X-ray vision for design.

Here’s a quick tip for training this skill:

  • Start by drawing simple shapes — spheres, cubes, and cylinders.
  • Draw these shapes as if you can see inside them.
  • Overlap shapes and try to visualize how they fit together in space.
  • Practice rotating them mentally, then sketch the forms from different angles.

3. Training Your Brain with Simple Exercises

Training 3D vision is not a switch you flip overnight. It takes practice and patience. Here are some fun exercises I recommend for beginners:

  • Use clay or playdough, roll simple shapes, then draw what you made from different angles.
  • Look at everyday objects and try to break them down into basic volumes mentally.
  • Sketch these objects multiple times, focusing on their 3D construction rather than surface details.

Remember, the goal is to shift from thinking flat to thinking in volumes.

4. Personal Story: How This Changed My Sketching

I recall a moment when I first understood this concept fully. Trying to sketch a complex product design, I got stuck. Instead of giving up, I broke the object down into cylinders and boxes in my mind. Sketching those transparent volumes helped me complete the design confidently and faster. It still feels like magic every time!

How to Draw a Plug Easy (Block/Box Sketching Technique) | Industrial Design Sketching

5. Tips for Beginner Sketchers

  • Don’t rush. Sketching in 3D is a skill to develop with time.
  • Keep your sketches loose and light initially — focus on shapes, not details.
  • Use transparency to understand depth and layering.
  • Rotate objects with your mind — use your imagination actively.
  • Practice daily, even for a few minutes.

Keep a sketchbook dedicated to 3D practice. You’ll see progress quickly!
If you need to train your perspective, I invite you to download the Designer Starter Kit, or if you already have some good notion of perspective, you can start this beginner tutorial to draw and modify cubes in transparency.

How to start drawing from imagination : Basic perspective | Product Design Sketching

I hope these insights help you start seeing your designs in a new light. It’s a rewarding journey, and every sketch gets you closer to mastering your 3D vision.

Cheers, Chou-Tac


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Chou-Tac

Hello! I'm Chou-Tac, a Product Designer from France.

If the sketching methods I’ve acquired aid me in my life and in my industrial design career, I believe that they can also help you reach your dream goal as a student or professional designer.

Leave a comment in the blog or send me an email at choutac@thedesignsketchbook.com : )

Chou-Tac

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