1. The Design Process & Technical Drawings
Intro to Drafting & Engineering

2. The Design Process
The design process consists of three phases: design, production and marketing.
We will be focusing on the DESIGN phase, which are all of the steps necessary to go from an idea to the creation of a product suitable for mass production
This will mean preparing a design plan and completing technical diagrams

3. Specifications
Before design and construction can begin, we need a set of specifications
Specifications define and specify the requirements and describe the characteristics of the desired product
A set of specifications contains the answers to several key questions

4. Contents of Specifications
A set of specifications must include:
What rules must the object meet?
What are the object’s characteristics?
What are the manufacturing costs?
What is the completion deadline for each stage?
What is the product’s feasibility (evaluation of the current design taking into consideration timeline, tech. knowledge, financials etc)?

5. The Design Plan
The design plan describes in a simplified way the elements that make up an object or device and explains how they work
It must include:
The force of action developed by the object
The direction this force is applied
The main components

6. Technical Drawing What is technical drawing? Also called drafting
Used by architects, interior designers, and design engineers
Standardized system to allow for international interpretation
A technical drawing has only one interpretation based on the codes and conventions used to draw it (ex. line thickness, symbols, text size)

7. Uses of Technical Drawings
Engineering Drawings
Engineers use these drawing for mechanically engineered items, or items that are made using machines
These can include both machine parts and finished items
Used so that important aspects like size and dimensions can be absolutely understood by everybody in the manufacturing process

8. Common Features
Common features of engineering (technical) drawings include:
Geometry: the shape of the object, which is represented by different views of the object
Dimensions: the size including acceptable units
Material: what the object is made of

9. Examples:

10. Views
By drawing different views of an object we can accurately show the three-dimensional form using a series of two-dimensional drawing
These drawing show only one perspective at a time such as top, front, side, back or bottom for simple objects

11. Example: A Stapler
Top View
Front View

12. Drawing Views
You need to include dimensions and lines indicating what the stated dimensions refer to
Ex:
You need to label your view
You need to make sure you don’t move the item as you are drawing it too much so that you do not change your perspective
16 cm