Before you can determine which drill bit to utilize for a certain operation, you need first understand its structure and suggested use. With this drill bit kinds and applications guide, you will always use the correct drill bit for the job. Looking for drill bits and other kinds of construction supplies? Take a look at Fast Build for premium quality supplies.
It is important to use the correct bit for the surface it is made for drilling. If you use incorrect bits on surfaces, it can result in ruining the bit, the surface or even burn out your drill.
Common Types of Drill Bits
There are several drill bit kinds available on the market right now. However, we would want to focus on the most frequent types of drill bits you are likely to come across while hunting for them.
- Twist drill bits
Twist drill bits are perhaps the most prevalent drill bits on the market right now. They have spiral designs on them to help in drilling and eliminating debris from the hole they produce in the material. The twist drill bits are suited for use on metal, plastic, wood, and other similar materials.
These drill bits will be composed of either high speed steel or carbon steel. High-speed steel is suitable for drilling into a variety of materials and can withstand high temperatures. Carbon steel, on the other hand, is suitable for drilling wood rather than metals. They are fragile bits that bend much more than high speed steel bits.
- Screwdriver bits
They are made with a hex shank to fit in most drills. They are said to be perfect for drilling pilot holes. They are, however, constrained by their modest power. They may not have many applications; therefore, their availability is restricted. Also, there is not a lot of diversity in screwdriver bits. The same cannot be stated for the previously stated twist parts.
- Masonry bit
The name of the bit tells you all you need to know about its use. Masonry bits are often used for drilling into stones, quarry tiles, concrete, block, and a variety of other materials. The cutting tip will be tungsten carbide, and it will be attached to a helical steel shaft. The tip of some of the masonry pieces will be made of an extremely durable silicon bronze alloy.
These bits are often seen in power drills. The goal is to have enough power to drill through the hard concrete surface. Sharpen the masonry bits using a drill sharpener or a grindstone if necessary.
- Spur point bit
The spur point bit may also be referred to as a wood or dowel bit. They are built with a center point and two elevated spurs on the flanks. These two spurs’ purpose is to keep the drill bit drilling straight. When dealing with a spur point bit, it is best to utilize a power drill. This is due to the fact that it will leave a clean sided hole. In addition to drilling wood, the same technique may be used to drill polymers.
- Bullet pilot point bit
At first glance, a bullet pilot point bit may seem to be a spur point bit; nevertheless, this kind is meant to operate on metal, plastics, and wood. The bullet pilot point will still have twisting flutes that are ground away as part of the design. As a consequence, you may now have a truer and more accurate drill bit as compared to standard twisted bits.
- Countersink bits
Countersink bits are required to create a conical recess in the workpiece in order to place the countersink screws. They are intended to work on softer materials such as plastics and wood rather than metal. To get the greatest results, use a power drill.
The countersink bits with clearance drill are a variant on the countersink bits. This combo is fantastic since it allows you to drill a clearance hole as well as a countersink recess in a single pass.
- Tile bit
The tile bit is required if you need to drill through ceramic tiles or glass. It is designed with a tungsten carbide tip. The tile bit is often used with a slow-speed hand drill or power drill. When drilling through glass, add a lubricant like white spirit or turpentine to keep the tip cold.
Ceramic tiles may still be drilled with a masonry bit, but the power drill should be set at the slowest speed possible and with no hammer action. The hammer motion has the potential to split tiles.
- Flatwood bit
The flatwood bit features a pointed center that guides the flat section into the wood as it drills. It is only intended for use with a power drill. The side will cut a hole in the wood. These bits are often used to drill big holes into workpieces. They will leave a flat-bottomed hole in the artwork due to their design.
- Hole saw
Buy a hole saw bit if you wish to produce big diameter holes in wood or plastic. The bits are capable of cutting to a depth of 18mm. Deeper varieties are available, though they are less frequent. If you want a nice hole, try utilizing a power drill at modest speeds to get the job done.
- Forstner bit
The Forstner bit is made with a flat bottom. It is often used for working on kitchen cabinet hinges and other similar applications due to its design. To produce a smooth hole, use it with a power drill and apply the appropriate amount of pressure. It may be difficult to position and control a freehand movement.
- Wood Auger drill bit
Drilling big diameter holes in wood or boards will need the use of a specialized wood auger bit. It is most typically seen in a hand brace. When used appropriately, it produces clean, deep, and flat-bottomed holes. If you need to sharpen the drill bit to make it function better, use a fine file.