The main types of drill bits are masonry bits, twist bits, screwdriver bits, spur point bits and flat wood bits. Other drill bits include bullet pilot points, countersink bits, tile bits, wood auger bits and forstner bits. Masonry bits are used to drill holes in stones, concrete, bricks and tiles.Know More
The tip of a masonry bit is made of a hard tungsten carbide and a steel shaft. Although they can be used with hand braces, these bits are commonly used with power drills. This type can further be classified into more types, ranging from the 4-millimeter to the 16-millimeter masonry bits.
Twist bits are perhaps the most common bits used by handymen to bore holes in wood, plastics, metal and masonry. The tip chips into the material being drilled while the spiraled shaft removes the fragments. Screwdriver drill bits are used to make pilot holes on wood.
Just as the name suggests, spur point bits are used to make smooth parallel holes, especially on dry timber. On the other hand, bullet pilot points have a central pointed pin and two spurs on each end. Countersink bits are not used on metal, but are ideal in making holes for countersink screws. A tile bit makes holes in ceramic tiles and glass with the aid of a low-speed drill and lubricant.Learn more about Tools
Metal roof installations require a jigsaw or power metal shear, a staple gun, a drill and drill bits. Hardware needed includes roofing metal, roofing nails and screws and wood screws. A ladder or scaffolding system allows easy access to the roof.Full Answer >
A seed drill is a machine that deposits seeds in a uniform manner and immediately covers them with soil. Prior to the invention of the seed drill, farm workers carried bags of seeds and planted them manually. Using a seed drill greatly increases the yield of the harvest.Full Answer >
To drill through cast iron, use a carbide diamond drill bit dipped in lubricating oil to make the hole and finish with a round metal file. Wear all proper safety equipment while drilling through cast iron, including protective eye-wear, goggles and gloves.Full Answer >
SDS drills are rotary hammer drills with a chuck system that allows the drill bit to move up and down independently for extra power during drill hammering. SDS chucks work with a variety of bits for drilling, hammering and chiseling.Full Answer >