To drill an acceptable hole into any material, there are different types of drill bits and the right kind must be utilized and accurately while sharpened as suitable.
Numerous jobs in the house need a drilled hole – whether it’s setting up a rack, assembling a cabinet or for a light fitting hanger.
For essential prerequisites, an arrangement of steel twist drills including few masonry bits will likely be adequate for the normal handyman. In any case, for more complex jobs/material, required are the others bits – maybe bigger, or intended for a particular material or purpose.
Types of Drill Bits
Different types of drill bits available in the market, we have tried to cover few of them. Checkout the infographic below.
Generally referred to as the twist drills, these are likely the most widely recognized drilling tools utilized by a handyman with a hand or an electric drill. Front edges will cut the material while the spirals remove the remains from the gap and keep the bit straight. They can be utilized on timber, or metal, or plastics and comparative materials.
Screwdriver Drill Bits
Intended to fit in a rechargeable screwdriver, screwdriver bit drills comprises of the hexagonal shank – perfect for drilling pilot openings. However, these are constrained by low power and the available small bits size is limited.
As the name proposes, these are intended for drilling into concrete, quarry tiles, brick, block, or stone. Usually, cutting tip is produced using tungsten carbide attached to the spiraled steel shaft. Several of these are known as the ‘durium tipped’, which means a profoundly strong silicon bronze alloy utilized rather than tungsten for the cutting point. Bit sizes go from 4-16mm.
Spur Point Bit
Otherwise called a wood and dowel bit, Spur point bits to have a focal point and a couple of raised spurs which assist in keeping the bit drilling in a straight line. The bit cuts the timber quick when utilized as a part of the power drill and also leaves the clean sided hole. These are perfect for drilling the holes for dowels since the whole sides are clean as well as parallel. Sizes go from 3-10mm. These bits should just be utilized for drilling wood and some plastics.
Bullet Pilot Point
Bullet drills have focal point including two spurs, and are similar to spur point bits, yet can be utilized in plastics, metal, and wood. Unlike typical twist drills, twisted flutes are ground away; creating a more genuine, more precise bit compared to ordinary twist bits. These bits cut clean holes and do little harm when they get through the backside of the workpiece. Sizes can be found from 1.5-13 mm.
The countersink is actually not a genuine drill; however, is utilized in power and hand drill to shape the cone-shaped recess for the countersunk screws heads. These bits have are intended for use on delicate materials, for example, timber and plastics, and not metals. When utilized with a power drill to countersink a hole, it tends to ‘chatter’ and results in a harsh surface. Countersinks are accessible with fitted handles and can be utilized by hand twisting, easier
than changing bit in a drill when just a moderately few holes require countersinking.
Tile bit is used for drilling the ceramic tiles or glass and feature a ground tungsten carbide tip. These bits can be utilized with a hand drill, however, are best utilized in inconsistent speed power drill at moderate speed. When drilling a glass, some type of lubricant (turpentine and white soul) ought to be utilized for keeping the tip cool.
Countersink with Clearance Drill
This combination bit is very shrewd; they drill the clearance hole as well as countersinks everything in a single stroke. These can be utilized in the power drill and a few routers. Diverse bits are needed for the various size of the clearance holes and are likely not practical unless a substantial number of given hole require being drilled or countersunk.
Flat Wood Bit
Designed for using in power drill only, the main point finds bit and flat steel on each side removes the timber. Flat wood bits are utilized to drill large holes and give level bottomed hole and therefore are perfect where the screw/bolt head should be recessed into timber.
Hole saw is utilized for cutting big, settled, diameter holes across holes in wood and plastic. These bits will normally cut up to 18mm. These are best utilized in the power drill at a lower speed.
Forstner bits are used to frame holes with a level base, for example, for kitchen cabinet hinges. These are best utilized in a power drill. In the event that utilized freehand, positioning is hard to control since there is no focal pilot
Wood Auger Bit
Wood Auger bit is perfect when drilling large, deep holes in the wood and bulky man-made boards. For the most part, an Auger bit is just utilized as a part of a hand brace. These bits cut a perfect and deep, level bottomed holes.
Great quality types of drill bits are costly, so deal with them carefully. Store them carefully in a case or a box, instead of allowing them to move around freely in a toolkit where cutting edges might be damaged.