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🔧 Power Tool Safety

Topic: Safe use of portable power tools Duration: 5-7 minutes Best for: All crews using power tools

Most Dangerous Power Tools​

ToolPrimary HazardCommon Injuries
Circular sawKickback, contactLacerations, amputations
Table sawContact with bladeLacerations, amputations
GrinderDisc breakage, contactEye injuries, lacerations
Nail gunUnintended dischargePuncture wounds
Reciprocating sawContact, kickbackLacerations

General Power Tool Rules​

Before Use​

  • Inspect tool for damage
  • Check cord/battery condition
  • Verify guards are in place and working
  • Ensure correct blade/bit for the material
  • Clear work area of trip hazards

During Use​

  • Keep all guards in place — never remove or bypass
  • Don't carry tool by the cord
  • Don't yank cord to disconnect
  • Keep fingers away from triggers when not in use
  • Disconnect power when changing blades/bits

After Use​

  • Wait for tool to stop before setting down
  • Store properly
  • Report any damage or malfunction

Tool-Specific Safety​

Circular Saws​

Kickback kills. It happens when:

  • Blade binds in the cut
  • Cutting warped or wet lumber
  • Blade not parallel to cut line
  • Wrong blade for material

Prevent kickback:

  • Support material properly (cut-off should fall away)
  • Don't force the saw — let the blade do the work
  • Use appropriate blade for the material
  • Keep blade sharp
  • Check that guard retracts and returns freely

Body position:

  • Stand to the side of the cut line
  • Never reach under the material while cutting
  • Never hold material with your hand near the cut

Grinders​

Disc failure is catastrophic. The disc can shatter and hit you or others.

  • Inspect disc before each use
  • Don't use cracked or damaged discs
  • Match disc RPM rating to grinder RPM
  • Use the correct disc type (cut vs grind)
  • Always use guard
  • Wear face shield (safety glasses aren't enough)
  • Let the disc reach full speed before engaging material

Nail Guns​

Unintended discharges cause most injuries.

  • Use sequential trigger (not bump fire) when possible
  • Keep finger off trigger until ready to fire
  • Never point at anyone
  • Assume it's always loaded
  • Watch for nails penetrating through material
  • Don't use to fasten near edges (nail can exit)

Drills​

  • Secure small pieces with clamps
  • Don't wear loose clothing or jewelry
  • Start at low speed, especially on metal
  • Use correct bit for material
  • Don't apply excessive force

PPE for Power Tools​

Tool TypeEyeHearingHandsFace
Saw (wood)✓✓✓—
Saw (metal)✓✓✓✓
Grinder✓✓✓✓
Nail gun✓✓✓—
Drill✓✓✓*—

*No gloves with rotating tools that can catch

Electrical Safety​

  • Use GFCI protection on all cord-connected tools
  • Don't use in wet conditions
  • Don't use with damaged cords
  • Don't overload outlets
  • Keep cords out of water

One-Hand Rule​

Never operate a power tool with one hand if it's designed for two.

Tools requiring two hands:

  • Circular saws
  • Reciprocating saws
  • Large grinders
  • Large drills

Discussion Questions​

  1. What power tools are we using today?
  2. Are all guards in place and functional?
  3. Is everyone trained on the tools they're using?
  4. Where are the GFCI outlets/adapters?

Today's Commitment​

"I will inspect tools before use, keep guards in place, and wear proper PPE."

Sign-In​

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