Cold Chisel Materials and Cutting Action
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Cold Chisel Materials and Cutting Action

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@SociableWichita

Questions and Answers

What is the purpose of a flat chisel?

  • Cutting off rivet heads
  • Chipping flat surfaces, trimming castings and forging, and cutting thin metal (correct)
  • Cutting angles of 700 or more
  • Chiseling in positions inaccessible to a flat chisel
  • What is the effect of a cutting angle that is too large?

  • The metal will build up in front and the chip will not curl off (correct)
  • The chisel will require more frequent sharpening
  • The chip will curl off due to the loss of wedging action
  • The chisel will dig into the metal even with the minimum angle of relief
  • What is the purpose of a side cutting chisel?

  • Trimming castings and forging
  • Cutting off rivet heads
  • Chiseling in positions inaccessible to a flat chisel (correct)
  • Chipping flat surfaces
  • What is the preferred cutting edge for most work in a flat chisel?

    <p>Slightly convex</p> Signup and view all the answers

    What is the effect of a cutting angle that is too small?

    <p>The chisel tends to dig into the metal even with the minimum angle of relief</p> Signup and view all the answers

    What is the typical cutting angle of a flat chisel?

    <p>60°</p> Signup and view all the answers

    What is the purpose of draw filing?

    <p>To produce a good appearance by removing scratches and leaving an even-grained finish</p> Signup and view all the answers

    What is pinning of files?

    <p>When metal particles become embedded in the file teeth</p> Signup and view all the answers

    What is the effect of pinning on the file?

    <p>Causes deep scratches and reduces the efficiency of the file</p> Signup and view all the answers

    Why does pinning tend to occur when filing soft metals?

    <p>Because soft metals chips cannot clear easily</p> Signup and view all the answers

    How can pinning be reduced?

    <p>By relying on frequent cleaning to remove pins and dirt</p> Signup and view all the answers

    What happens when a file is not cleaned often?

    <p>It acts like a dull file</p> Signup and view all the answers

    How should the drill be laid down when not in use?

    <p>Gently in a secure resting place</p> Signup and view all the answers

    What should be checked before using an electric drill?

    <p>The condition of the drill, including the power lead and casing</p> Signup and view all the answers

    Why is it essential to use a three-pin plug with an electric drill?

    <p>To ensure the earth return lead is securely connected</p> Signup and view all the answers

    What should you do if the drill's insulation is damaged?

    <p>Report the damage and do not use the drill</p> Signup and view all the answers

    How should the drill be gripped and held?

    <p>Firmly, with both hands</p> Signup and view all the answers

    What is a safety precaution to be taken while chiselling?

    <p>Using goggles and chipping screen</p> Signup and view all the answers

    What is the purpose of a rough grinding wheel in chiselling?

    <p>To remove the 'mushroom head' of the chisel</p> Signup and view all the answers

    What should you do at the break-through point when using an electric drill?

    <p>Apply very light pressure to ensure a clean break-through</p> Signup and view all the answers

    What is the characteristic of double cut files?

    <p>They have teeth formed by a double set of parallel chisel cuts that cross each other diagonally</p> Signup and view all the answers

    What is the purpose of filing?

    <p>Either to alter the size and shape of a part by removing considerable material or to smooth a surface without removing much material</p> Signup and view all the answers

    What is the most commonly used type of file?

    <p>Flat file</p> Signup and view all the answers

    What is the characteristic of single cut files?

    <p>They have teeth formed by a single set of parallel chisel cuts</p> Signup and view all the answers

    What should be done if there is doubt about the internal condition of a drill?

    <p>Return it to the electrical shop for a complete electrical test</p> Signup and view all the answers

    What is a common safety advantage of pneumatic drills?

    <p>They are driven by air pressure, making them safer</p> Signup and view all the answers

    What is a potential fault in a pneumatic drill?

    <p>A split or chafed air-line</p> Signup and view all the answers

    What is an important consideration when selecting a drilling machine?

    <p>The size of the drill and the dimension of the job to be drilled</p> Signup and view all the answers

    What is a characteristic of a bench drilling machine?

    <p>It usually has a capacity of 13mm or less</p> Signup and view all the answers

    What is a typical feature of the feed mechanism in a bench drilling machine?

    <p>Manual with hand feed</p> Signup and view all the answers

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