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    Powerpoint ed Powerpoint ed Presentation Transcript

    • SEK. MEN. TEKNIK TAWAU
      ENGINEERING TECHNOLOGY
      FORM 4
      TOOLS
      KESEPADUAN ILMU TERAS KECEMERLANGAN
    • OBJECTIVES
      At the end of the lesson, student should be able:
      Explain the definition of Hacksaw.
      Recognized each part of Hacksaw.
      State functions of Hacksaw.
      Determine the appropriate way using a Hacksaw.
    • BASED ON THE VIDEO GIVEN, WHY THIS PROBLEMS OCCURRED?
      You have the blade in wrong.
      You are not using sharp blade
      The number of teeth is to low for the project.
      You are putting too much pressure on the saw.
      You don’t clamp the work.
      “Practice Make Perfect”
    • IDENTIFY EACH TOOLS
    • What is HACKSAW?
      Refer on:-
      • Engineering Drawing Form 4 Text Book
      • Used to cut a work piece into desire sizes.
      • Wikipedia
      • http://en.wikipedia.org
      • Kamus DewanEdisi Empat
      • http://prpm/dbp.gov.my
    • Do you need a hacksaw?
      • To cut metal
      • Plastic
      • Wood
      • Metal Tubing
      • Aluminum
      • Copper
      • Brass
      • Electrical Tubing (conduit)
      • Plastic water pipe
    • Hacksaw Part
    • Hacksaw Part
      Which the most commonly used handles?
    • Hacksaw Part
    • Hacksaw Part
    • How to properly & safety use a hacksaw
    • How to properly & safety use a hacksaw
      General Hand Protection When Using a Hacksaw
      General Eye Protection When Using a Hacksaw
      Holding the hacksaw Correctly
      Safety With Materials
      Cutting Effectively and Safely
      Safe Storage and Care of Hacksaws
    • Hacksaw Safety Tips
      Choose the correct blade for the material being cut.
      Secure the blade with the teeth pointing forward.
      Keep the blade rigid and the frame properly aligned.
      Cut using strong, steady strokes directed away from you.
      Use the entire length of the blade in each cutting stroke.
      Keep saw blades clean, and use light machine oil on the blade to keep it from overheating and breaking.
      Cut harder materials more slowly than soft materials.
      Clamp thin, flat pieces that require edge cutting.
      If you’re cutting pipe, always secure it in a vise before cutting.
    • Setting up the hacksaw to cut
      Step 1. Determine which blade you will use to cut the material.
      Step 2. Insert the blade so that the teeth are pointing forward.
      Step 3. Tighten the thumbscrew until u can’t turn it with your hand (Hand tight)
    • Hacksawing Method
      You should work in the vice so that as many teeth as possible are in contact with the surface.
      You should orientate the work so that you are cutting vertically toward the floor.
    • EXERCISE
      Soft Steel
      Task:-
      You need to redraw everything back. Determine :-
      Type of blade
      Pointing of saw blade
      Best position of work piece when u cutting it
    • REFERENCE:-
      http://ezinearticles.com
      http://www.doityourself.com