Choosing a drill bit suitable for drilling

Drill bits are equipment used in conjunction with a drill. To be used to drill various objects prepare for assembling the workpieces together. It can also be used to loosen screws and nuts to remove parts and separate them. But in order for you to drill a hole into the workpiece as desired, while the workpiece is still intact and unbroken, you should definitely choose the right drill bit as well.

Currently, there are many different shapes of drill bits produced. that responds to more usage needs But because drill bits are quite similar in appearance. Therefore, it may make many people a little confused as to which type of drill bit is used with which material. Let's take a look together at what each type of drill bit looks like. What kind of work is it suitable for?

Reasons why you should choose the right type of drill bit

Choosing the right type of drill bit is very important in construction, or additions that require bonding objects together. Because in each material you choose to use, whether it be wood, steel, plastic, PVC pipes, there are often different materials and thicknesses. If you choose the wrong drill bit, it may shorten the life of your workpiece. It easily falls off during use or can damage the workpiece during drilling. For the above reasons, this is the answer as to why you should use the correct type of drill bit.

Choosing the right drill bit for the job

No matter what piece of work is drilled The first thing you should consider is the material being drilled. To help you choose the right drill bit to buy. Mostly, the drill bits that people like to use are as follows.

1. Wood drill bit

Made from good quality low carbon steel. Designed so that the tip of the flower is quite sharp. For use in drilling wood easily, beautifully, and with smooth holes. But it cannot withstand a lot of heat and friction. The wood drill bits that most people choose to use are divided into 4 main types:

• Brad-Point drill bits : They are most often called pilot drills that are used to start when drilling holes, such as assembling furniture. It will be easily noticeable because in the middle of the tip of the head there is a pointed tip protruding to precisely hold the position you want to drill. Does not slip during drilling Using this drill bit, you insert the pointed end into the wood into the marking point before drilling. In addition, the body is either a threaded bit type or a fluted type. There is an extra wide dust collection port to help remove wood material from the grooves during drilling. It also helps in boring the wood to a width and ensuring that the wood around the drill hole is not torn or cracked.
• Spade Bit Drill : The tip of the drill bit is similar to a spatula. But it has a sharp, flat blade at the end that sticks out. That will help position the drill precisely. Commonly used to drill wide holes in thick wood panels. Allows you to drill holes deep and through. You can also use the pointed end to remove the part of wood you drilled. However, when you use this drill to drill holes in wood, you may need to be careful of the drill bit shaking violently when using high drilling force. and to make it easier to penetrate To begin with, you take the paddle drill bit and drill into the wood to a small depth. And use a small Brad Point drill bit to drill additional holes into the surrounding wood where you drilled. before returning to using paddle blade drills again Most people like to use it for drilling softwood such as plywood and gypsum boards. It is also commonly used for assembling furniture and wiring.
• Forstner drill bit : It is a circular drill bit with blades surrounding it. In the middle is a pointed tip that protrudes slightly. Makes it possible to drill into wood precisely where you want it and make the holes smooth and even. It can also remove dust and wood chips from the pieces. Doesn't cause wood chips to get in the way of drilling in the hole while you drill It is commonly used to create a hole with a flat bottom but not through, such as drilling a dowel or reaming a hole before installing a nut or screw. However, you may need to use a low drilling force and a consistent drilling force. To get a smooth, beautiful hole, prevent burns on the drill bit and workpiece.
• Countersink drill bit : It is a drill bit used to remove the sharp edges of drilled holes. to improve the surface of the hazard Or use a pilot drill before tightening the nuts and screws. Often, a countersink drill bit with a tapered head is used to drill pilot holes. Before using a large countersink drill bit to remove the sharp edges and install screws or nuts It is commonly used to assemble various objects and furniture, such as door hinges, kitchen counters, wooden chairs, and drawers.

2. Steel drill bits

Steel drill bits are made from strong, durable steel to help drill through steel and still get beautiful holes. Most of the flowers are spiral cut throughout. But it has a angled bit tip that prevents it from moving out of position while you're drilling and a cutting edge for drilling or cutting thick metal to create beautiful, smooth holes. Suitable for drilling many types of steel, such as stainless steel, alloy metal, copper, mold steel, iron pipe, iron. This type of Drills are divided into 3 types that people commonly use:

• Black oxide coated drill bits (BO) : It is a drill bit that can help absorb heat while drilling because coated with black oxide. This feature helps extend the life of the drill bit for longer use. Suitable for drilling steel that is relatively soft. Not thick or hard, such as alloy sheets, stainless steel sheets, most often used for drilling holes in general work in everyday life rather than heavy work, whether it be drilling for inventions. Drilling steel sheets to make grates, etc. It can also be used to drill wood, but it must be soft wood and not very thick.
• High speed steel drill bits : will be more durable than black plated drill bits. Can withstand heat While working well and with this feature, it can drill through materials quickly. Easy to penetrate, suitable for use in general steel drilling cast iron, aluminum, stainless steel, mold steel, copper, Including drilling into hard wood. It can be said to be a basic drill bit that you should have on hand. In addition, HSS drill bits are coated with various substances such as Titanium Nitride, which has the advantage of helping to transfer heat well while drilling. Reduce damage to the workpiece surface Or will it be Titanium Carbon Nitride has the same advantages as Titanium Nitride will give strength. has higher efficiency
• Cobalt drill bits : are drill bits made from steel and cobalt. Some manufacturers may also mix in a small amount of tungsten. It is stronger than a HSS drill bit. Resistant to heat from friction Resistant to abrasion well Suitable for drilling cast iron, aluminum, stainless steel, mold steel, copper, tough and hard metals.

But no matter what form of drill bit you use to drill steel, In the drilling process, you should dip the drill bit in oil. Or always drop oil onto the marking point to be drilled first. To reduce the friction of the drill bit with objects. Makes it easy to drill workpieces Get a smooth drill hole. Also, if you choose a small drill bit, you can use a high drilling force for fast drilling. But if it's a large drill bit, low drilling force may be required. To prevent flicking that risks hurting your wrist.

3. Drill bits for drilling concrete

The drill bit has a twisted spiral shape and is made from metal. The drill head has a pagoda shape and is made from carbide. It is a metal that is hard to absorb shock from drilling. The body of the drill bit has relatively close thread spacing. So that while you are drilling into the concrete The dust will not spread much, but will instead be small dust particles that gather around. It also helps reduce friction. Suitable for drilling concrete, brick, cement, clay bricks. Popularly used for drilling walls, wiring, water pipes, hanging picture frames, clocks, medicine cabinets, key cabinets, various electrical appliances, etc. that need to be hung on concrete walls and ceilings.

But for installing various equipment onto the wall, it is always necessary to install anchors first. To give you an idea of the proper depth, you can measure the depth by measuring the anchor from the drill bit head and marking it. Doing this will help you know the appropriate depth for drilling the anchor so you don't drill a hole that isn't too deep.

4. Hole Saw drill bit

Hole saw drill bits are similar to Fosner drill bits. which is a circular base There are sharp teeth around the outside. which will have different distances If the teeth are widely spaced, they will help suppress vibrations for smooth drilling, reduce wear on the cutting blades, and reduce noise levels while in use. It is also easy to remove debris to reduce the chance of blockage or heat. As for the tooth spacing and frequency of adjacent teeth that are the same distance apart, It will allow for precise drilling but may take a little longer to drill or be slower than the tooth spacing.

In addition, in the center of the drill bit there is a tip protruding with a spring. It has a hexagonal head that protrudes slightly to use as an initial pilot drill to get you to the desired position before gradually applying force to the hole saw bit on the object. Can be used to drill steel, wood, plastic, and cement. Suitable for drilling large holes such as electrical wiring channels. Install wooden door latch. For each material, the size of the drill bit should be taken into account as well. Because if the size is too small, it cannot be drilled into materials that are hard and thick.

5. Step Drills

It is a drill bit that has a conical shape resembling a pagoda in layers. It can be used to drill holes in materials such as steel, wood, and plastic, but it must be a material that is not very thick. The distance between the layers of the pagoda drill bit is beneficial in that while drilling holes, it will help the material come out into pieces along the threads of the layer. Reduces dust accumulation and does not clog your work or drilling equipment. It also makes the hole size that you want the same size. This is because each layer of the drill bit has a number indicating its width. Suitable for drilling large holes, such as drilling shelves, making screens, running electrical wires, floating pipes, etc.

6. Drill bits for drilling into tiles

It is a drill bit with a pointed tip similar to a shovel. It has a pointed bit tip that can be used to place it on the marking point where you want to drill. Suitable for drilling holes in ceramic tiles. Porcelain and stone to embed nuts, screws, and install various equipment. While using drilling equipment, water should be used to moisten the area where you drill or the drill bit head as well because it will reduce the friction of the drill bit and reduce the It's getting hotter. However, this may need to be used in conjunction with other types of drill bits.

For example, if the back of the tile is made of cement. You should use a tile drill bit to drill into it until you notice that there are pieces of cement coming out. Then change the drill head to a concrete drill bit to proceed with the drilling and insert the anchor into the drilled shape. And to get the desired depth you should use a measuring anchor with a drill bit. Then mark the spot so you can to the appropriate depth.

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