Week 14

Welcome back to our blog! 

Activity 1: Sketching of straight lines freehand

We were tasked to draw a straight line using 2 points and a single stroke.

Figure 1: Straight line sketch

Activity 2: Sketching of curves

For the curves, we needed to plot 3 points and then connect them together using a curve.

Figure 2: Curves sketch

Activity 3: Sketching of circles

In order to draw the circles, we had to first draw 2 parallel lines 3cm apart and then draw the circles in between them.

Figure 3: Circle sketch

Activity 4: One-point perspective sketch

Now we have a one-perspective sketch of a milk carton that was drawn with single vanishing point from a horizontal line. Most of the lines are parallel to each other and are drawn towards the vanishing point

Figure 4: Milk Carton Sketch

Activity 5: Two-point perspective sketch

Next we proceeded with two-perspective which is similar to the one-point perspective but now there are 2 vanishing points on a horizontal line. We start with a vertical line where each end is connected to both vanishing points. Next, 2 parallel lines were drawn on the left and right of the existing vertical line. After that, connect each end of the 3 vertical lines to both vanishing point. Finally, remove all the 'hidden' lines.

Figure 5: Book sketch

Figure 6: Product Sketch

Moving on, here's our product sketch which is a clay air-con.

Figure 6: Clay air-con sketch

Activity 7: Design specifications

Product	Portable non-electrical air-con
Category	Specific Metric	Quantitative Value
Physical	Easy to carry
	Compact	145 x 40 x 40mm (Handle) 105 x 150 x 150mm (Fan Head) 90 x 40 x 40mm (Clay Tubings) (ID = 20mm)
	User Operated	User is able to create enough charge after 3s for long use
	High Longevity	Tubings don’t deform; effective cooling for ~1-2 years
Functional	Long operation time	1-2 hours by kinetic battery
	Cooling	4-8°C temperature difference from inlet to outlet air
	Minimal setup time	< 20s to charge battery sufficiently
	Temperature resistant	20-60°C
	Effective air flow	4 m/s
	Chemically resistant	Does not easily degrade when exposed to air
Others	Inexpensive	<$400