How to Draw a 3D Bottom Half Sphere

Steps to draw a 3D bottom half sphere.

I'll be writing about the steps soon when I find the time. Meanwhile make do with just sketches. They should be pretty self explanatory.

2D to 3D Drawing - Oblique Drawing

The image above is an example drawn in 1N1. The one just below is demonstrated for 1N2.

There are various forms of 3D drawings. In the order from the least realistic to the most realistic 3D drawing: Oblique Drawing, Isometric Drawing, One-Point Perspectives, Two-Point Perspectives, and finally Three-Point Perspectives. The last one (Three-Point Perspective) is commonly used in Interior and Architecture illustrations and sometimes in Comic Drawings to product very 'dynamic' perspectives.

The examples above shows how an Oblique Drawing is done.

Step 1:
Draw the object's side or front or side view in 2D. Draw exactly how you want it to look like. Observe the chair example.

Step 2:
Select your view point, i.e. from the left or the right.

Step 3:
Project 45 degree lines from the 'corners' in the direction where their respective surfaces is visible to the eye.

Step 4:
You should already know the length of the third dimension. Mark it at the end of each 45 degrees projection lines.

Step 5:
Complete the drawing by joining the end points of each of the 45 degrees projection lines.

Step (Extra):
Make use of the crating method and guidelines to complete more complicated drawings. Refer to the examples with a 'cut' corner, the triangular object and the drawing of a pyramid.

Note: Parallel lines. Many students are not aware that their line works were not parallel to each other whenever they should be parallel. Thus usually ending up with some weird distorted looking objects.

Be careful. When you draw the third dimension to scale, remember to apply the foreshortening technique, i.e. divide the value by 1/2. Otherwise your object will end up looking elongated and you wonder why. =)

Your Homework:Refer to your Design Journal and flip back to your coaster design ideation section. You have at least three to four full pages of organic looking 2D coaster designs. Copy the shapes and convert them into 3D Oblique drawings.

Practice drawing 3D Oblique drawings using your 2D coaster ideas. Fill up at least two full pages of drawing in your design journal.
(A few examples can be found in the image above).

Have fun...

Dollar Key Tag Project - Part 1 - Design Situation to Research

The Dollar Key Tag Project Schedule

Schedule for Design Situation writing to Research for Idea Generation

You are to write your own Design Situation based on the (given) Design Brief.

Your design situation should include a description of your observation and your own grocery shopping experience and the use of the shopping cart.

You can:

1) Go to a supermarket and observe how people respond or react when they retrieve the shopping cart, and or
2) Recall your own experience when you need a shopping cart for your shopping in the supermarket.

The example above shows one way you can prepare to write your design situation. In the form of a mind-map you can start noting the issues with retrieving the shopping cart and the experience of having or not having a dollar coin.

Notice I sketched a scene of two persons at the shopping cart holding area and their conversation about having a dollar coin for the cart. A simple sketch like this to illustrate the situation (or context) can be extremely helpful in explaning what is actually going on and makes it so easy to understand. Sketches of a sequence of events may be helpful too.

Alternatively you may wish to take photos of the situation. Note: In a public place, always ask for permission from the store before you take any photos. If you are taking people, it is also polite to seek their permission to do so. Otherwise take photos yourself and your friends in the situation.

Above is an example done in 1N1

Below is an example done in 1N2
Design Considerations and Design Specifications

Note: When you prepare to list your design considerations and limitations, always remember to list areas that is consistent with your design situation and design brief.