Staring at a blank page? Learning product design sketching takes a pen, plain paper and 10 minutes a day: practise cubes, spheres and cylinders first, then build real products from them.
Sketching is one core skill of the wider craft, so it helps to know what is industrial design before you go deeper.
| Item | Value |
|---|---|
| Daily practice time | 10 minutes a day |
| Basic tools | Plain printer paper and a basic ballpoint pen |
| Three-step approach | Form, Divide, Beautify |
| Vertical lines in 2-point perspective | Drawn perfectly vertical |
| Starter exercise routine | 14 days |
The figures above come from the BYU Design Review series Learn to Sketch: Part 1 and Part 2. Recommendations like these can change, so check the source before you rely on them.
Start with the right mindset and tools
Most beginners are held back by embarrassment, not by a lack of talent. The author of the BYU series writes that sketching is a learnable skill, just like playing the piano, and that embarrassment is the enemy to learning (source).
The tools are modest. The same author says the only things you need are plain printer paper and a basic ballpoint pen. Optional extras are a straight edge, a fine tipped marker and a pen for shading.
Leave the eraser and ruler in the drawer while you train. The Design Sketchbook beginner tutorials say no eraser, no ruler, because a kept mistake shows you what to fix with your next line (source).
Keep the habit small. The BYU author says that dedicating just 10 minutes a day to sketching practice makes a huge difference (source). If 10 minutes is too much, the beginner FAQ on The Design Sketchbook suggests 2 minutes, because a few lines is already a win (source).
Build every product from three basic forms
Every complex product starts as simple geometry. The Design Sketchbook tutorial names the cube, sphere and cylinder as the basic forms a designer needs, because any sketch of a product starts with simple forms to build it (source).
Here is how the tutorial approaches each form:
- Cube: draw the top surface first, then the vertical lines down to the bottom, then the bottom surface.
- Cylinder: draw a top and a bottom ellipse and connect them. In the tutorial’s example the top ellipse is thinner and the bottom one wider, and you can picture the cylinder as a pipe in a box.
- Sphere: start with a circle, then add two ellipses to turn it from a flat circle into a sphere.
Next, add contour lines. The tutorial compares this to cutting a cake: you divide the form horizontally and vertically, and the lines follow your perspective. This lets you show a surface with a few lines instead of shading.
Keep your pressure light at first and tidy up with one clean pass. The tutorial’s daily drill is three rows: 5 cubes, 5 cylinders and 5 spheres (source).
If you are curious how geometric thinking shaped design teaching, the guide to bauhaus design principles is a useful companion to these exercises.
Use the Form, Divide, Beautify process
A complex product is easier to draw when you break it into steps. Paul Skaggs, a BYU industrial design professor, reduces sketching to three basic steps, as described in Learn to Sketch: Part 2.
- Form: sketch the basic shape or box that encloses the total volume, and keep it light.
- Divide: lightly add or subtract further basic shapes.
- Beautify: darken the lines to show the final shape, then add contour lines, shading, reflections and details.
Work on the Form step carefully, because everything after it depends on it. The BYU author illustrates this with a hand drill built from three centre-lines: the barrel, a perfectly vertical handle and an angled battery.
Perspective has rules, and the same article lists some of them for 2-point perspective. Vertical lines stay perfectly vertical, and a circle drawn in perspective becomes an ellipse. The author also says he often imagines vanishing points that sit off the page (source).
Draw lines with confidence
Hesitant, wobbly lines hide good ideas. These habits from the sources help you draw with more control:
- Use the dot-dot-line method: place two dots and connect them with one confident stroke (source).
- Rehearse the stroke above the paper before you commit. A Vizcom guide calls this through-drawing, or ghosting (source).
- Draw ellipses with multiple loops instead of one, so you build momentum (source).
- Draw straight lines beyond where they need to end, which helps with adjustment (source).
Then use line weight to show depth. According to Vizcom’s guide, heavier lines mark foreground elements and important edges, while lighter lines carry construction guidelines and subtle details (source).
One last detail adds realism. The Design Sketchbook advises a small rounded corner instead of a sharp one on a cylinder, which adds a touch of realism to the drawing (source).
Explore ideas with thumbnails and silhouettes
Once the basics feel comfortable, sketch ideas rather than objects. Jorge Paricio, an adjunct professor of industrial design at RISD, says the work usually starts with lots of thumbnail sketches that are refined in stages into full renderings. His advice appeared in a CreativeLive article published May 31, 2015 (source).
In the same article he suggests skipping colour at this stage and focusing on form. He adds that this phase can take weeks or even months, depending on the project.
A silhouette check is a quick test. Vizcom’s guide says silhouette sketching strips away surface details to focus on a form’s outline, which shows whether your shape language works before you invest in detail (source). The same guide warns against fixating on one idea and rushing to polish it before testing whether the concept works.
When a direction holds up, develop it further:
- Show it from different viewpoints, the way a sculptor reviews a form from all angles.
- Add a perspective view plus a front and a side view without perspective to show basic dimensions.
- Suggest a few materials with different strokes while you are still ideating.
These tips come from Paricio’s article (source). For help with the last point, read about the materials used in product design so your suggestions are realistic.
Follow a two-week practice routine
The BYU author offers a 14-day routine that rotates through the basic elements and shapes (source).
- Days 1 and 2: line exercises.
- Days 3 to 7: circle and ellipse exercises, alternating.
- Days 8 to 14: full pages of cubes, cylinders, tapered parts, spheres, frames, cylinders and cubes again.
Date your pages and look back after two weeks. Comparing day 1 with day 14 is the easiest way to see your progress.
Frequently asked questions
Do I need an eraser or a ruler?
Show answer
Not for training. The Design Sketchbook beginner tutorials say no eraser and no ruler, so you keep your mistakes visible and learn from them (source).
How long should I practise each day?
Show answer
Start with 10 minutes a day. If you cannot find that time, 2 minutes of lines is still a win, according to the same beginner FAQ (source).
Can I learn product design sketching without talent?
Show answer
Yes. The beginner FAQ says sketching is a skill, not a gift, and the BYU author likewise treats it as learnable through practice and feedback (source).
What should I sketch first?
Show answer
Start with the cube, sphere and cylinder, then move on to simple products built from those forms. The Design Sketchbook tutorial says every product sketch begins with simple forms (source).
