Drawing+Skills

toc When designing a product, students should be able to respond creatively to design briefs and specification criteria, including:
 * 4.2 Designing Skills**
 * clear communication of design intentions using notes/or sketches
 * annotation which relates to the original specification criteria

= Design Brief = Using your astable "Flashing Eyes" pcb you are going to design a casing using the following specifications:
 * //Specifications//**
 * Will encase all the internal components - and support the exposed LEDs (2) and switch
 * Will be rectangular in shape
 * Will allow access so the battery can be changed
 * Will be made of acrylic using the laser cutter and joined with acrylic cement
 * Will be colourful and contain a graphic to suit the "flashing eyes"
 * Initial design**s
 * Sketching
 * Lining in & adding colour
 * Development**
 * Orthographic views
 * Isometric
 * Final Design**
 * 2 Point Perspective
 * Google SketchUp

Using your design journals follow through the following design steps to create a casing for your "Flashing Eyes" making accurate and clear drawings and annotation, using the correct equipment, and following the specifications. = Drawing Skills =
 * Task**

Initial design ideas

 * This is about generating lots of **ideas**, **communicating** them and developing them towards a **realistic prototype** that answers your design brief
 * Communication of design intentions using notes and / or sketches
 * Annotations whichrelates to the original specification criteria
 * You must keep checking your ideas against you design specification and evaluating them as you go along.
 * How to begin**
 * Start by making simple, quick sketches of your first thoughts and ideas
 * Use a pencil (see notes below)
 * Often designers us a fiber tip pen or a ball point pen for speed, but you have to have great sketching skill to be able to do this!
 * Produce 2D and 3D freehand drawings
 * Add simple notes and labels
 * Record all of your thoughts using notes, sketches and diagrams, and what you think about an idea, even if you think it is good, bad, or science fiction
 * Do not waste time carefully adding colour to your ideas at this early stage, simple add colour to indicate which colours you are thinking of using.
 * Make sure you produce a **wide range** of design solutions. The more you produce the better.

Using Pencils
There are different types of pencils as well as different quality of pencils, you should be using artist quality pencils. The range of differrent lead types include H, HB and B. You can use a 2B pencil for shading and toning a drawing, while a 2H pencil is better for construction and fine detail lines. A compromise would be to use a sharp HB pencil for both purposes. The paper you draw on can also make a difference, to the behavior of the pencil as well as the final sketch. Check out the following site @http://www.pencils.com/pencil-information/hb-graphite-grading-scale

Colour swatches
Colour swatches indicate a range of colours you intend to use in a project, you may refer to your specifications, or market research. For example check this site out: @http://www.rss4lib.com/2008/07/search_flickr_for_color_scheme.html which then leads to this link: @http://labs.ideeinc.com/multicolr/ Or try this colour and pattern palette maker:
 * @http://www.colourlovers.com/


 * Resources:**
 * @http://www.officemuseum.com/pencil_history.htm
 * @http://katinthehat.wordpress.com/2008/02/16/patchwork-revisited/

Design Development
Consider all the angles, annotation of important features, methods of manufacture and materials, Finally copy and add colour - try range of rendering techniques: media type="custom" key="7351199" @http://www.technologystudent.com/designpro/drawtec1.htm
 * colouring pencils
 * marker pens
 * watercolours
 * pastels
 * composite card drawing
 * Resources:**

Orthographic Projection and Working Drawings
<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; padding-right: 10px;">Once you've created one or more suitable concept sketches, the next step is to make working drawings. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; padding-right: 10px;"> These are drawings that are proportionally accurate but at a reduced scale, often 1/4 of full size. They are used to refine design details and to determine specific dimensions of the various components. They also form the basis for the bill of materials and cutlists. Unlike sketching, working drawings are not drawn freehand, but rather are created with drafting tools (pencils, erasers!, triangles, T-square, compass, French curve, ...) or with a CAD package. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; padding-right: 10px;"> The most common type of working drawing is an orthographic projection that provides separate straight-on views of the front, side (usually right) and top of the object. All three views or elevations go on the same piece of paper with the top view directly above the front view and the right side view directly to the right of the front view.

<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; padding-right: 10px;"> The following presentation has some examples and some videos explaining orthographic projection, watch them carefully then create an orthographic drawing of your final design. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; padding-right: 10px;">media type="custom" key="7351201"

**Third Angle Projection** The symbol for third angle projection. This is important information for the person interpreting the drawing because in third angle projection:
 * the view from the front is in the middle
 * the view from the left is on the left
 * the view from the right is on the right
 * the view from the top is on the top
 * the view from the bottom is on the bottom
 * the view from the rear is on the far right.

**Cutting List** List of materials that need to be cut before assembly
 * **Part Number[[image:spacer50x50.png]]** || **Material[[image:spacer50x50.png]]** || **Length[[image:spacer50x50.png]]** || **Height[[image:spacer50x50.png]]** || **Depth[[image:spacer50x50.png]]** || **Qty**[[image:spacer50x50.png]] ||

Isometric
media type="custom" key="7351267" Download and print some Isometric grids from this site:
 * []