Drills

How do you select the proper bit or attachment?

• Follow manufacturers’ instructions when selecting and using a bit or attachment, especially with unfamiliar drills or work.
• Select the bit or attachment suitable for the size of the drill and the work being done.
• Ensure that the bit or attachments are properly seated and tightened in the chuck.
• Use only bits and attachments that turn true.
• Use the auxiliary (second) handle for larger work or continuous operation.

What should you do when working with powered hand drills?

• Wear safety glasses or a face shield.
• Keep drill air vents clear to maintain adequate ventilation.
• Keep drill bits sharp always.
• Keep all cords clear of the cutting area during use. Inspect for frays or damage before each use.
• Disconnect power supply before changing or adjusting bit or attachments.
• Tighten the chuck securely. Remove the chuck key before starting the drill.
• Secure workpiece being drilled to prevent movement.

• Slow the rate of feed just before breaking through the surface.
• Drill a small “pilot” hole before drilling large holes.

What should you do when working with small pieces?

• Clamp stock so work will not twist or spin.
• Do not drill with one hand while holding the material with the other.

What should you avoid when working with powered hand drills?

• Do not use a bent drill bit.
• Do not exceed the manufacturer’s recommended maximum drilling capacities.
• Do not use a hole saw cutter without the pilot drill.
• Do not use high-speed steel (HSS) bits without cooling or using lubrication.
• Do not attempt to free a jammed bit by starting and stopping the drill. Unplug the drill and then remove the bit from the workpiece.
• Do not reach under or around stock being drilled.
• Do not overreach. Always keep proper footing and balance.
• Do not raise or lower the drill by its power cord.
• Do not use in wet or muddy locations. Use a nonpowered drill instead.
• Do not use excessive force to drill into a hard material. Reduce drill speed if possible.

Refer to OSHA Answers General Hand Tool Operation for more tips.