Search The Tool Guru

Portable Drills

Download Print
Portable Drills

Available in a wide variety of types and capacities, portable power drills are undoubtedly the most used power tools in the world. Because of their handiness and application to a very wide range of jobs, drills often receive very heavy usage. For this reason your safety demands that you carefully check capacity limitations and accessory recommendations of your drill.

See the owner/operators manual.

Be sure the trigger switch actuates properly. It should turn the tool "on" and return to the "off" position after release.If equipped with a lock-on, be sure it releases freely. Check carefully for loose power cord connections and frays or damage to the cord. Replace damaged tool and extension cords immediately.

Be sure the chuck is tightly secured to the spindle. This is especially important on reversible type drills.Tighten the drill bit securely as prescribed by the owner/ operators manual. The chuck key must be removed from the chuck before starting the drill. A flying key can be an injury inflicting missile. Check auxiliary handles, if part of the tool. Be sure they are securely installed. Always use the auxiliary drill handle when provided. It gives you more control of the drill, especially if stalled conditions occur. Grasp the drill firmly by insulated surfaces.

Always wear safety goggles or safety glasses with side shields complying with current national standard, and a full face shield when needed. Use a dust mask in dusty work conditions. Wear hearing protection during extended periods of operation.Do not wear gloves, loose clothing, jewelry or any dangling objects that may catch in rotating parts or accessories. Tie back long hair.

Always hold or brace the tool securely. Brace against stationary objects for maximum control. If drilling in a clockwise (forward) direction, brace the drill to prevent a counter clockwise reaction.Don't force a drill - apply enough pressure to keep the drill bit cutting smoothly. If the drill slows down, relieve the pressure. Forcing the drill can cause the motor to overheat, damage the bit, and reduce operator control. If the drill binds in the work, release the trigger immediately- unplug the drill from the power source, and then remove the bit from the work piece. If you suspect that the drill operation you are performing can potentially bind, then under no circumstances should you actuate any switch "lock-on" that may be available to you. Never attempt to free a jammed bit by starting and stopping the drill.As you approach hole breakthrough, grip or brace the drill firmly, reduce pressure and allow the bit to pass through the hold easily. Always have firm footing when drilling. Brace or position yourself very carefully when working on ladders and scaffolding. Be sure of your balance and control before you start the job. Unplug the tool before changing bits, accessories or attachments.

And remember - when drilling blindly (you can't see behind what is being cut), check carefully for possible electrical wiring or pipes in your path. If wires are present, they must be disconnected at their power source by a qualified person or avoided to prevent possibility of lethal shock. Water pipes must be avoided or drained and capped. Always hold the tool by the insulated grasping surfaces, if provided. Remove materials or debris from the area that might be ignited by hot chips.

Unplug drills immediately after use and store in a dry place.