This unit will cover the basics of hand drawing and sketching.
This in an introductory course in Drafting, establishing basic sketching, designing and CAD skills and techniques in the design and modeling of a variety of projects.
This course is paced fairly quickly with a lot of assignments – try to stay up to date! There is ample time to complete all assignments IF you use your time wisely! Complete each assignment IN ORDER (ask for help if need be). Demos are usually done to keep up with the fastest students.
ALL assignments are a required part of the course.
Unit 1 Assignment List:
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Lettering
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Hand Sketching
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Graffiti Tag
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Isometric
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Orthographic Drawing Project
Take a picture of all your assignments and staple them together before handing them in. Make sure title block and NAMES are on your drawings.
HAND DRAWING |
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Lettering – Because your writing is messy, trust me. |
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Drafting is all about information.
While we need to DRAW clearly and accurately to convey information, when Hand drawings are hand-labeled. Good pencil-control skills in lettering (we know letters) help us sketch our drawings much better (we are learning drawings). ASSIGNMENT 1:
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Hand Sketching |
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Hand Sketching is a vital part of Design and Drafting.
Hand sketching is VERY quick and ideal for working out ideas When I fabricate things, I usually sketch my ideas out by hand on paper, or even in chalk on a concrete floor. When the idea and design is a “keeper,” I’ll draw it out in Computer Aided Design (CAD). A large part of this course is brainstorming and design. Developing good sketching skills is vital to your success in this course! Need help sketching something? Ask! I’m more than happy to help. ASSIGNMENT 2:
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Top 4 |
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OBLIQUE |
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Graffiti Tag |
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In the previous activity, you sketched how you felt it should look. In Drafting, there are specific “types” of drawings that we use.
The first “proper” styles of drawing is “OBLIQUE.” I like to think of this as Kindergarten 3D. If you start with a straight-on 2D drawing, add 45° lines to give it some depth and finish it off in 3D, you get a proper Oblique Drawing. These are quite easy to draw. Oblique tends to look somewhat “distorted,” since the lines of depth do not converge on a vanishing point (that is, it doesn’t look like it’s getting smaller the further away it goes). One way to make the drawing look less distorted is to draw the depth half size. Full-depth is called “Oblique Cavalier” and half-depth is called “Oblique Cabinet.” Circles will become ellipses, and are a bit tricky to draw.
Oblique Drawings are a good choice to show what an object looks like. It is not the best method for production drawings (drawings used to build or fabricate the object). ASSIGNMENT 3:
Print and mark yourself, then bring your product and mark sheet to your instructor |
Boring Awesome Top 10 |
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ISOMETRIC |
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Isometric Drawing is the second type of pictorial drawing. It is much more realistic looking than Oblique Drawings. An Isometric Drawing looks sort of like an Oblique, except instead of depth coming off a straight-on drawing at 45°, the whole things is sort-of turned 30°
Isometric is still not the best style for Production Drawings, but they are better than Oblique for showing the object are the “distortion” appears to be much less. ASSIGNMENT 4:
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ORTHOGRAPHIC |
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Orthographic Drawings are the best for showing all the detail needed to build an object. Almost ALL production drawings are done in Orthographic.
Orthographic Drawings show two or more straight-on views of the object. They do NOT show depth or 3D; every view is straight-on. They usually have a FRONT view, and whatever auxiliary views needed to convey ALL the required Typically, they have three views: FRONT, TOP, & RIGHT SIDE. These are the most difficult to understand, but once you wrap your head around them, they are pretty easy to draw. It is important to have all your views line up, and the details within the views line up. Make sure the widths and lengths are the SAME on their corresponding views. Project #1 Orthographic Projection
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