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Drafting

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  • 1. DRAFTING
  • 2. The systematic representation and dimensional specification and mechanical and architectural structure. The creation of artistic pictures or diagrams.
  • 3. Drawing  Is learning the skill to train our hands in order to develop our abilities and interests to draw
  • 4. QUALIFYING SKILLS THAT ANY DRAWER MUST POSSESS:  He must have the ability to interpret a working drawing.  He must know how to read symbols.  He must understand the alphabet of lines and drawing specifications.  He must have the ability to draw different styles of letters.  He should know how to draw and apply different shades in coloring.
  • 5. Drawing Instruments, Tools and Materials
  • 6. A. Tools, Instruments and Equipment 1. Triangles – they are usually made of transparent plastic which are used for drawing oblique and vertical lines.
  • 7. 2. Triangular Scales -English Scales -Metric Scales -they are made of wood, plastic or metal, which are use for drawing an object on a paper by scaling the sizes.
  • 8. 3. Drawing Board A portable board made of softwood, wherein a drawing paper is fastened on top.  Their working edge should be perfectly straight and their surface is trim and smooth.
  • 9. 4. Protractor   Is used for measuring and laying out arcs and circles as well as angles that cannot be measured with either the 45°or the 30° x 60° triangles. It is half-circle shaped instrument, made of transparent plastic used for guiding a draftsman in drawing different angles.
  • 10. 5. Compasses    Is used for drawing arcs and circles. It is made of the lower portion of the pencil leg. It is removable and to e replaced when needed. The pen and the needle point leg are held together by a handle.
  • 11. 6. T-square    Is an instrument used for drawing horizontal lines. It is also used to support the triangle for drawing vertical or inclined line Are made of wood, plastic or metal.
  • 12. Two Main Parts of T-square  The head  The blade  Three kinds of Tsquare -fixed heads -removable head -adjustable head
  • 13. 7. Drawing Set  It is a kit which consists of a compass, divider, ruling pen, compass pen and pencil leads.  It is used for drawing arcs and circles and inking them.
  • 14. 8. French Curve  It is an instrument which is usually made of transparent plastic and used for drawing irregular curves like an ellipse.
  • 15. 9. Ruler  It is made of wood, plastic or metal used for measuring purposes and for drawing and for drawing a straight line. The edge of the ruler should be straight.
  • 16. Materials
  • 17. 1. Drawing Paper  It should have a smooth surface when erasures are made.
  • 18. 2. Tapes and Tacks  There are varieties of tapes and tacks available in the store.  They are used for fastening the drawing paper on the drawing board.
  • 19. 3. Colors and water colors  They are coloring materials made of pigment, dyes, and others.  they are used for coloring drawings.
  • 20. Proper Care of Drafting and other Materials      Pencils should be sharpened whenever they show signs of dullness. Never use the edge of T-square and triangles to cut paper along its working edge. A slight nick at the edge will ruin the T-square. Wipe off the surface and edges of your Tsquare and triangles before and after using them. Avoid dropping your compass, divider and technical pens. Provide a place to hang individually your Tsquares, triangles, protractors and French curves after using them.
  • 21.  Provide a separate container for drawing pencils, compasses, dividers, rolling pens and technical pens.  Wash the nibs of your compass after using them.  Dry the compass nibs and needlepoint after washing. Store them in a dry place. This will avoid rust formation on the instrument’s parts.  Keep tools and equipment in their proper place after using them.

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