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Lab and Tool Safety


Lab and Tool Safety – PowerPoint PPT presentation

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Date added: 9 June 2019
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Title: Lab and Tool Safety

Lab and Tool Safety
Safety in the Classroom
  • Safety is a state of mind and a series of
  • Make safety a high priority,
  • Use common sense,
  • Safety is a set of actions,
  • Follow all safety rules,
  • Work in a safe way with
  • People,
  • Machines,
  • Materials

Safety with People
  • Personal Safety,
  • Concentrate on your work,
  • Dress Properly, (Avoid loose clothing)
  • Control your hair,
  • Protect your eyes,
  • Protect your hearing,
  • Do not use compressed air to clear away wood
    chips or debris,
  • Think before acting,
  • Ask questions, if you are unsure whether
    something is safe or not,
  • Seek First Aid for any injuries,
  • Follow all the specific safety rules identified
    by the instructor,

Safety around others
  • Never talk to someone operating a machine,
  • Do not cause other people harm by carelessly
    placing materials and tools on the tables or
    power tools,

Safety with Materials
  • Handle materials properly and with care,
  • Watch long pieces of material,
  • Use extreme caution when handling sheet metal,
  • Grip hot materials with tongs, or pliers,
  • Wear gloves when handling hot or sharp materials,
  • Use extreme caution in handling hot liquids and
    molten metals,

Safety with Materials
  • Check all material for sharp edges,
  • Place material that gives off fumes in a well
    ventilated area,
  • Lift material properly, lift with your legs not
    your back,
  • Dispose of all scrap material, do not leave it
    for someone else to clean up,
  • Dispose of hazardous wastes and rags properly,

Safety with Machines
  • Use only sharp tools and well-maintained
  • Return all tools and machine accessories to their
    proper storage locations,
  • Use the RIGHT tool and machine for the RIGHT job,
  • Do not use any power tool or machine without
    permission from the instructor,
  • Always wear eye protection,(Safety Goggles)

Safety with Machines
  • Keep hands away from all moving cutters and
  • Use push sticks to feed all materials into the
    wood cutting machines,
  • Use ALL machine guards,
  • Do not leave a machine until the cutter has
    stopped completely,
  • Whenever possible, clamp all work,
  • Unplug all machines, before changing blades and
    or cutters,

Safety with Machines
  • Remove all chuck keys or wrenches before starting
    the machine,
  • Remove all scraps and tools from the machine
    before using it,
  • Remove scraps with a push stick,
  • Do not try to complete a process that has not
    been demonstrated to you,
  • Always wear safety glasses,

Band Saw Safety
  • Youll learn
  • hazards of operating a band saw
  • general machine safety rules
  • rules specific to saws and
  • rules specific to band saws

Common Hazards
  • Safety Hazards of Band Saws
  • Point of operation - Contact with the moving
    blade may occur.
  • In-running nip points - Clothing, hair, or
    hands may be caught by and pulled into feed
    rolls or the pulley mechanism.
  • Kickbacks - Stock caught by the blade may be
    thrown back at the operator.
  • Flying Chips - Wood chips and splinters may be
    thrown by the cutting action of the blade.
  • Struck by Broken saw blades may fly out and
    strike employee.

The operator is required to hand-feed and
manipulate the stock against the blade saw along
a predetermined line. The operator must also keep
the stock flat on the work table and exert the
proper cutting pressure. This machine is usually
considered a manual feed tool.
General machine safety
  • This section contains the general requirements
    for equipment including
  • Securing machinery - Secure machines designed to
  • stay in one place.
  • Slipping hazards - Protect yourself from
  • slipping hazards.
  • Arrange work areas to avoid creating hazards
    Make sure there is adequate space around
    machinery so students can clean and handle
    material without interference from other students
    or machines, do not have to stand in the way of
    passing traffic, and bring in and remove
    materials safely.

General machine safety
  • Hand feeding and retrieval tools (Push Sticks)
    Make sure hand feeding and retrieval tools meet
    the following requirements
  • are suitable for the work to be done
  • dont create a hazard when used
  • are of a size and shape that will keep the
    operators hands outside the hazardous area
  • are constructed so that they wont shatter if
    they come in contact with the machine tool

NOTE Tools such as push sticks or push blocks
can not be used instead of required safeguarding.
General machine safety
  • Adjusting or repairing machinery Make sure
    power-driven machinery is completely stopped
    before either making adjustments or repairs or
    removing material or refuse from the machine
  • Power transmission parts - inspect them and keep
    them in good condition
  • Protect employees lubricating moving machinery
  • keep your hands out of hazardous areas and by
  • employees to not wear closely fitted clothing.

General requirements for all saws
Applies to all materials. wood and metals,
plastics, composites and other materials.
General requirements for all saws
  • Make sure saws are safe to use - This means
    removing from service a saw that has any of the
    following problems
  • Cracked
  • Dull
  • Badly set
  • Improperly filed
  • Improperly tensioned
  • Clean any saw where gum has begun to stick on the
  • Eliminate unintended fence and table movement
    during use
  • Keep hinged tables and fences firmly secured and
    in true alignment for all positions

Specific to band saws
Fully enclose band saw wheels with wheel guards
that meet the following requirement The
outside periphery of the wheel enclosure is
Specific to Band saws (continued)
Enclose, or guard all portions of the blade
except for the working portion of the blade
between the guide rolls and the table.
Drill Press Safety
  • Secure bit in chuck by placing the chuck key in
    two of the three holes and twisting firmly.
  • Remove chuck key immediately after installing or
    removing a bit.
  • Brush the table with a shop brush, never with
    your hand.
  • Use a scrap block of wood to drill into under the
    work place.
  • To prevent injury to the hands when working on
    the drill press, always secure your work piece to
    the table by either clamping, vice, or jig.
  • Make all set-up adjustments such as table height,
    depth stop, and fastening material to table
    before machine is turned on.
  • Consult the speed chart for correct speed setting
    when drilling various materials.
  • The bit should be withdrawn frequently when
    drilling large or deep holes to prevent damage to
    the bit. Locate center of holes with a center
  • A V-Block should be used when drilling round

Disc Sander Safety Rules
  • Make sure the sanding surface is not loose.
  • Make sure the metal table is adjusted to the
    necessary angle.
  • Always use the downward motion of the rotating
    disc. The downward motion of the rotating disc
    will allow the user to have control and prevent
  • Keep fingers far from the sanding surface to
    prevent injury.
  • Make sure the disc sander has come to a complete
    stop before making adjustments or finished.

Lifting Safety
  • 1
  • Squat
  • Load between legs
  • Back straight and vertical
  • 2
  • Push up with legs
  • Keep load close
  • 3
  • Lift load with arms
  • Keep load close
  • Change direction with feet
  • Don't twist body

  • Read Chapter 5- Material Properties
  • Pages 59-68
  • Complete Questions 1-10 on pages 67-68,
  • Pick 10 Key words from page 67 and define them,