The modern tool box always has the indispensable hand-held power tools ready for action. Among these power tools are the corded and cordless power drill which is the most commonly purchased tools in the market today. A powerful and versatile tool for your home improvement projects would be the combination of a power drill and the right drill bit for the application. Here is a buying guide on power drills.Prefer Drill Comfort

It is practical to understand that any tool should feel just like an extension of your hand. A tool could feel great while holding it in the store, but just imagine how it would feel after hours of use in your hand. So, make sure that the controls are convenient and easy to use. Check to see if the forward and reverse switch as well as the high and low speed switch is conveniently located for easy operation.

Additionally, drills come in three handle styles, the t-handle, the pistol-grip handle and the right-angle grip. The T-handle is most popular to cordless models where the handle is placed near the middle. It is designed to distribute the weight for better balance and lessen wrist strain on the user. But some people still prefer the more traditional pistol-grip style that is usually found on corded models. The right-angle version on the other hand is designed for use where space is restricted and is commonly found in construction projects.

Measure the Drill Power

Drill power of cordless drills is measured in volts. Drill models come in several volt sizes, from around 2 volts for a cordless screwdriver function up to 20-volt tools. But remember this, higher voltage always mean heavier in weight to carry.

Always consider buying a tool that will meet at least 80% to 90% of your drilling needs. The 12-volt to 18-volt models is the most popular and usually meet most homeowner’s work needs at home.

Additionally, the corded drills volt power is measured in amps. A higher amperage motor would mean more power in the tool. Before using a power tool, always read the device manufacturer’s operating and safety instructions. Follow maintenance instructions after use.

Choose a Drill based on Application

Drilling on softwood, hardwood, metal and masonry require different drill speeds and bits. Drilling on harder materials requires larger bits and lower speeds. Conversely, drilling on softer materials needs smaller bits that are used at higher speeds.
Choose a drill with variable speed. When working on different materials and accessories, it is essential that one can control the bit speed for quality holes.

Another valuable feature in drills is there adjustable clutch settings. The clutch reacts to the resistance of the screw that continues to change as the density of the material changes. This allows you to drill holes of consistent depths. When adjusted properly on identical scrap material, the clutch can keep you from driving a screw too deep. This feature is indispensable for beginners. The clutch can also reduce the possibility of snapping a screw or stripping a screw head altogether.

The Drill Chucks

The chuck is where the bit is inserted and has jaws that grip the bit. Drills are designed to have 1/4-inch, 3/8-inch and 1/2-inch chucks. The chuck size indicates the shaft diameter of the bits and accessories that can only fit the drill. The 3/8-inch size chuck is sufficient for most homeowners.

Chucks can be keyed where the jaws are tightened or loosened with a key. The keyless chuck can be tightened or loosened by hand. Keyless chucks are sometimes beneficial if ever you have misplaced or lost the chuck key. It is also quicker and easier to change bits on a keyless chuck, especially if you are wearing gloves on the job.

In most models, you have to use both hands to turn the chuck in opposite directions to change bits, but there are models that allow you to use one hand because the shaft locks when the trigger is off.

The Batteries for Cordless Drills

There are two main battery types for cordless drills. These are the nickel cadmium (NiCd or Ni-Cad) and the lithium ion (Li-ion). Long in use is the Ni-Cad type and is compatible with existing battery chargers. Li-ion batteries have their own chargers and are lighter and smaller.

Battery charge time intervals are affected by several factors. These include; the temperature, the material being drilled, the drilling is nonstop or intermittent, or the battery is at full charge or not when used. Do not forget to purchase a charger if one is not included in the tool set.

Depending on the type of tool and charger, the standard time to charge a battery pack can vary from one hour to overnight. Having additional batteries would be a good idea if your workload is constant. Always read the instruction manual for recharging information and specific run-time of the cordless power drill.