U.02 Technical Drawing

Day 01 - 30 AUG 2017 - Isometric and Orthographic Tech. Drawings

In brief, isometric drawings are the ones that look like 3D representations, with the object set at perfect 30° angles. They are similar to perspective drawings except that there is no vanishing point to distort angles; this will make them look somewhat flatter than perspective drawings of the same object.

Orthographic drawings are the ones that require at least 3 views (top, front, right side) to communicate each edge in relation to the other edges. These are difficult for most people to read and you will need to take your time studying them to make sense out of them. Do not allow yourself to give up in frustration; it takes time to get used to orthographic drawings.

Today we're going to start by using crayons to color in sheet U.02a, which is intended to help you transfer information from isometrics into orthographics by relying on our brain's use of color.

TOP
FRONTRIGHT SIDE

By applying primary colors (red, yellow, blue) in this sequence, we make it easier to then label sides that are visible from more than one orthographic view by combining those two primary colors and ending up with a secondary color: TOP+FRONT, FRONT+RIGHT, and TOP+RIGHT, respectively.

After completing U.02a, we'll move on to U.02b, which is a matching exercise. There is a print-out, after which you will open up a Google Form containing the answer sheet, such as it is. Help your neighbor if they are confused or seek clarification about where a specific arrow is pointing!