Week 14

During the Week 14 lesson, we learnt more about product sketches. It is important for us to learn more about product sketches and drawing as it is an essential for creative expression in product design and development. It is considered by many to be the principal approach where product designers externalise a product’s design concepts. By having a design drawing, we are able to visualise our concepts better and have a better understanding of our product.

For the first task, we were tasked with sketching a straight line by drawing 2 different points that are approximately 15cm apart. We placed our pen on the first point and focused on drawing a line to connect to the second point in a single stroke without moving our wrist.

Figure 1: Straight lines

For the next task, we had to sketch curves. Firstly, we drew 3 points about 10cm apart from each other. We placed the pen on the first point and focused on connecting it to the second and third point with a single stroke.

Figure 2: Curves


After the second task, we were tasked to sketch circles. We had to draw two horizontal lines that are about 3cm apart. Trying to use a single stroke to draw a circle touching the 2 lines and repeat it 5 times.

Figure 3: Circles

Lastly, we had to sketch ellipses and using 3 parallel vertical lines, we had to use a single stroke to draw ellipses touching all 3 vertical lines.

Figure 4: Ellipses


We watched a video explaining what a one point perspective is and how to start with our own one point perspective drawing of a milk carton. A one point perspective drawing refers to a drawing that has a single vanishing point, usually directly opposite the viewer’s eye and usually on the horizon line. All the lines parallel with the viewer’s line of sight recede to the horizon towards the vanishing point. Initially we were not confident with drawing the milk carton using the one point perspective. However after a few tries we were slowly getting more confident and our one point perspective sketch of the milk carton was getting better. We also did sketches of other locations using one point perspective.

Figure 5: Railway station by Nick


Next, we watched another video which was about two point perspectives. The drawing or sketch is defined by 2 vanishing points that represent 2 convergence points at an infinite distance away. All the geometric objects that are arranged perpendicular or parallel to each other will have drawn sides that converge on each vanishing point. We had to produce a sketch of a book using the two point perspective to ensure that we understood how to use the drawing to let our group visualise our own chemical product.  We also did sketches of other locations using two point perspective.

Figure 6: Zebra crossing by Nick

After learning about the 1-point and 2-point perspective, we had to use what we learned from the previous task and we had to apply it in sketching our own chemical product. The sketch is able to tell us a lot more about our product and helps us better understand as we are able to have an idea of how it is supposed to look like and the dimensions of our product.

Figure 7: Vaccine Box (2-point perspective) and Vaccine Holder (1-point perspective)

For the 2nd part of the lesson, we learned more about design specifications. Design specifications is a set of documented requirements to be satisfied by a material, design, product or service. It is a common preliminary part of any engineering design and product development process.

Design specifications are able to provide product design teams with the information needed to build out new features or functionality of a product. A good design specification allows the product designers to answer the following questions:
  • What are we building?
  • What should the final build achieve?
  • How do we measure success?
The type of specification relevant to product design are Material Specification, Functional/Performance Specification, Standard Specification and Test Standard. For the preliminary design stage, the focus will be mainly on material and functional/performance specifications

For the 2nd activity, we were tasked to create a specification table for our group’s chemical product.

Figure 8: Specification Table for Material and Functional/Performance Specifications

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