Gsmst foe 04 sketching and dimensioning part 3 07
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The document discusses engineering drawing sketching skills and techniques. It emphasizes that initial sketches are vital to the design process and should display adequate detail. Sketching is described as a rapid, freehand method of drawing without instruments to communicate ideas. Proper sketching techniques include using medium grade pencils to draw geometric figures that represent object features clearly. Lettering should be done in a single stroke gothic style and guidelines promote uniform character shapes, line order, and spacing.
Gsmst foe 04 sketching and dimensioning part 3 07
- 1. Engineering Drawing Sketching Skills GSMST
- 2. Objectives Tips and Techniques Lettering Patience and practice needed
- 3. Sketching Although most final drawings are computer generated, initial and freehand sketches are vital to the design process Freehand does not mean messy. Sketches should display an adequate amount of detail, and any pertinent notes/comments pertaining to the drawing For instance, if a line is supposed to be straight, make it as straight as possible. A square will not pass for a circle.
- 4. Sketching Sketching is a rapid , freehand method of drawing without the use of drawing instruments. Sketching is also a thinking process and a method of communication .
- 5. Sketching This is not artistic sketching, but technical sketching Emphasis will be on sketching geometric figures to represent features of objects Medium grade pencils work best for sketching All lines should be dark enough to standout from the page
- 6. Engineering Drawing Rules Always use a Pencil. Make all lettering the same size. Use Engineering or Drafting Paper.
- 7. Pencil Lead Designation Note: Reverse order below
- 8. Sketching Tips Sketching straignt lines does not mean they have to look like they are machine drawn.
- 9. Sketching Tips If you don’t have a ruler, you can estimate dimensions using your pencil when sketching Always keep your pencil at arms length. Why?
- 10. Sketching Tips Layout of drawing using your pencil for dimensional reference
- 11. Lettering The style of engineering lettering we will use in this course is Single Stroke Gothic Lettering An example of the characters is shown on drawing numbers 1 and 2 Notice that only capital letters are demonstrated, since we will use only capital letters on drawings
- 12. Lettering Notes Lettering Guidelines – Handout Lettering Styles Shape of Letters Order of Drawing Lines Character Uniformity Spacing
- 13. Single Stroke Gothic Lettering
- 14. Lettering – Vertical Gothic Font
Editor's Notes
- #13: Overview: Lettering must be neat and readable – Should use all capital letters Tools Traditional hand sketching Computer Aided Drawing (a large industry producing computer packages they may have heard of in AutoCad, ProEngineer, SolidWorks) Media (how we record) Paper – helpful to know about Standard Sizes (Table 1) and Title Blocks Alphabet of lines - examples of line types.
- #15: Tell the students that this guide to good lettering is on the website. Tell them that they should use all caps for notes on drawings and the letters should be ~1/8 inch or 3 mm high. The reason for using all caps is that someone could reduce the size of their original drawing on the copy machine. The capital letters can be reduce by 50% and still be readable. We expect good quality lettering and the lettering to be done in vertical gothic font.