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Drafting Tools and Materials
This document discusses various drafting materials and tools, including types of drawing paper, masking tape, pencil sharpeners, erasers, drawing pencils, triangular scales, erasing shields, T-squares, triangles, compasses, dividers, and protractors. It provides details on the uses and functions of each tool, such as hard drawing pencils being used for accuracy and soft pencils being used for art work. Masking tape is used to fasten paper without damage, and different types of erasers are suited to removing marks or making corrections. T-squares are used for horizontal lines while triangles are used with T-squares for vertical lines. Compasses and dividers are used for drawing
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Introduction to drafting materials and their uses. Key tools include drawing paper, masking tape, pencil sharpeners, and erasers.Detailed overview of pencils used in drafting: hard for accuracy, medium for general, and soft for art.
Overview of essential drafting tools, including triangular scales and erasing shields, highlighting their functions.
Description and types of T-squares and triangles, crucial for making straight lines and accurate angles in drawings.
Instruments for precision in drawing: compasses, dividers, protractors, each serving specific measurement or drafting functions.
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Drafting Tools and Materials
- 1. DRAFTING MATERIALS AND TOOLS,ITS USES AND FUNCTION
- 2.
- 3. Various types ofdrawing papers are available for use but hard and soft surface drawing papers are highly recommended to be the best. This type does not groove easily when pressure is applied to the pencil. Oslo paper is commonly used but bond paper is also recommended
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- 5. This is usedfor fastening the drawing paper on the drawing table or drawing board because it does not damage the board and it will not damage the paper if it is removed by pulling it off
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- 7. Pencils should besharpened whenever they show sign of dullness. Various types and designs are available in the store for use.
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- 9. This is usedto clean the dirt off the drawing. A soft eraser is advantageous in removing smudges and pencil marks, whereas, a harder eraser is useful for making changes and correcting errors in the drawing.
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- 13. HARD PENCILS are usedwhere extreme accuracy is required especially working on graphs, diagrams and charts.
- 14. MEDIUM PENCILS are usedfor general purpose work in drawing.
- 15. SOFT PENCILS are toosoft to be used in mechanical drafting. They are very useful for art work of various kinds.
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- 17. This is atool generally used when reproducing a drawing in an enlarged or reduced form to some regular proportion. Its main function is to reproduce the measurements of an object in full size, reduced size, and enlarged size.
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- 19. This tool ismade up of metal with irregular holes. It is a useful tool to protect the rest of the drawing when clearing up smudges, unnecessary pencil lines and other erasures.
- 20. DRAFTING INSTRUMENT Drawing instrumentsare used for drawing and designing purposes. Their quality is very essential if you want to have good result.
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- 22. It is adrawing instrument used when making horizontal lines. It is also used for guiding triangles when drawing vertical lines. It is made of wood, plastic or the combination of both.
- 23. There are three(3) types of Tsquare, namely: 1. Fixed Head. The head is fastened to the blade. It is used for ordinary work. 2. Movable Head or Adjustable Head. It has one fixed and one adjustable head and used only for occasional drawing. 3. Detachable Head or Removable Head. It is designed for comfort when carrying the T-square.
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- 25. It is athree-sided ruler, which typically has two equal sides meeting at a 90 degree angle and to a third side at 45, 30, including 60 degree angles. It is usually made of plastic and comes in different sizes.
- 26. If in use,the base of the triangle must rest on the blade of the Tsquare. Drawing a line always starts from the point near the base going upward. Commonly used triangles are: a. 30 degrees X 60 degrees b. 45 degrees X 45 degrees
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- 28. This drawing instrumentis used when drawing arcs and circles. It is used in a similar way to a divider. It is composed of one with the pen leg and the needle point leg being held together with a handle. This drawing instrument can be used for both penciling and inking
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- 30. This is adrawing instrument used when transferring measurements, dividing lines and arcs into the desired number of equal parts. It can easily transfer accurate measurements by adjusting the divider points. Constant correct practice is necessary before doing an actual work for a quick and easy control when use.
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- 32. It is asemi-circular instrument divided into 180 equal parts, each of which is called a degree. It is used to determine gradations of the degrees when measuring arcs, angles and circles. High quality protractor is usually made of plastic.