1. Parallel Lines and Spirals Exercise
Product Design Sketching Activity

2. Activity Objectives In this exercise, you will get to
acquire control in the lines you draw
develop skill and confidence in line drawing

3. Instructions Draw in one single continuous line
Do not break lines into many segments
Draw slowly

4. Parallel Lines
The ability to draw parallel lines is paramount in product design sketching
Draw slowly
Look ahead and use the edges of the paper as visual guides
Do not let yourself be interfered by previous mistakes
Lines start and stop cleanly, an accentuated end is better than fading end

6. Point-to-point Lines
When we draw product forms in perspective, we have to draw medium-length straight lines from point to point
Draw 50 dots randomly on a blank sheet of paper
Connect dots distant from each other with straight lines

10. Circles
Circles big and small are used frequently in product design sketching
Draw a row of circles between guidelines 2cm apart
Draw with even circular motion so that the curvature is smooth
Repeat with guidelines of 4cm apart

11. Spirals
Fill up a full sheet with circular spirals each of at least 10 revolutions
Draw in both clockwise and anti-clockwise directions

15. Curves
Curves of different acceleration are used to give dynamism to product forms
Draw Curves groups of changing curvature