Design – Product Design & Architecture

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  Design – Product Design & ArchitectureBasic Drafting Skills - Drafting Instruments“A design is as good as it’s instruments.”A engineering drawing is a highly…
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Design – Product Design & ArchitectureBasic Drafting Skills - Drafting Instruments“A design is as good as it’s instruments.”
  • A engineering drawing is a highly stylized graphic representation of an idea. The idea might be of something that we can see such a real or virtual object, space or environment.
  • In some cases, such as an electronic schematic diagram for example, the drawing will bear no visual resemblance to the physical object that will be built from the information it provides.
  • Conventional & C.A.D.Conventional Drafting ToolsDrawing SurfacesDrawing TableDrawing BoardDrafting Equipment
  • Drawing board/table
  • Drawing Surface
  • Available in a variety of styles and sizes. Most are adjustable up and down, and can tilt to almost any angle from vertical 90o to horizontal
  • The drawing surface must be clean, flat, smooth, and large enough to accommodate the drawing and some drafting equipment.
  • If a T-square is to be used, at least one edge on the board must be absolutely true.
  • Most quality boards have a metal edge to ensure against warping and to hold the T-square securely
  • Drawing Table with Drafting Machine
  • Drafting Equipment
  • Drawing Horizontal lines
  • T-square
  • Parallel edge
  • Drafting Machine
  • Arm/elbow type
  • Track type
  • T-Square
  • It provides a parallel straight edge for the beginning drawing drafter.
  • It is composed of two parts: the head and the blade. The two parts are fastened together at an exact right angle.
  • The blade must be straight and free of any necks and imperfections.
  • T-Square (cont’d)
  • Used to draw horizontal lines on the drawing sheet.
  • Used to draw vertical lines and slanted lines with the help of additional equipment basically 45o and 60o triangles.
  • Draw lines only against the upper edge of the blade. Make sure the head is held against the left edge of the drawing board to guarantee parallel lines.
  • Use a T-square to align the drawing paper to the drawing board, and to draw parallel horizontal lines on the paper.
  • Parallel Straightedge
  • A parallel straightedge is a laminated maple blade with transparent plastic edges similar to those on the T-square. Its primary purpose is the same as the T-square.
  • The parallel straightedge uses a system of cords and pulleys so that it is supported at both ends by a cord tacked to the drawing board.
  • You can move the straightedge up or down the board with pressure at any point along its length and maintain parallel motion automatically.
  • Drafting MachineDrafting Equipment - Triangles
  • 45° Triangle
  • Draw vertical lines and lines @ 45°
  • 30° x 60° Triangle
  • Draw vertical lines and lines @ 30° and 60°
  • Adjustable Triangle
  • Draw lines @ 0° to 90°
  • Drafting Equipment
  • Compass
  • Draw circles and arcs
  • Protractor
  • Measure and layout angles
  • Templates
  • Drawing repetitive features
  • Drafting Equipment
  • Pivot Compass
  • used mainly to draw circles and circular curves of relatively short radius .
  • Bow Compass
  • The conical is the needlepoint can allow it to be used as a divider
  • Extension Bars
  • Draws large circles
  • Divider
  • used to transfer measurements. To step off a series of equal distances, and to divide lines into a number of equal parts
  • Drafting Equipment
  • French Curves
  • Drafting Equipment - Pencils
  • Mechanical
  • Lead Holders
  • Wooden
  • 5B4B2B3B3H2HHFHBB6B6H5H8H9H4H7HDrafting Equipment - LeadsSOFTVery soft leads, smudge easily. Used for art work of various kinds and full-size details in architectural drawing. MEDIUM General purpose work. Softer grades (right) used for technical sketching, lettering, freehand work. Harder grades (left) used for line work on machine & architectural drawings.HARDUsed where extreme accuracy is required. Softer grades (right) used for line work on engineering drawings. Draw very light lines.Drafting Equipment
  • Erasers
  • Brush
  • Clean drawings w/out smudging
  • Erasing Shield
  • Erase near lines that should not be erased
  • Drafting Equipment - Scales
  • Engineer (Civil)
  • Mechanical drafter
  • Metric
  • Architecture
  • Drafting Media Types
  • Vellum
  • Tracing paper treated to make it more transparent
  • Most commonly used drafting media
  • Polyester drafting films (mylar)
  • Very transparent, strong, and lasting
  • Strongest drafting media
  • Bond
  • Standard printing and copy paper
  • Drafting Media SizesE – 44 X 34 48 X 36D – 34 X 22 36 X 24C – 22 X 17 18 X 24B – 17 X 11 12 X 18A – 11 X 8.5 9 X 12Reproduction Techniques
  • Plotters
  • Pen Plotters hold special technical pens of several different thicknesses and colors
  • Printers
  • Inkjet printers are now available in a variety of sizes to fit most drafting needs
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