It also offers a balance between sharpness and durability. It is ideal for drilling softer metals, such as aluminum and copper. 118°: Most commonly used angle for general-purpose drilling in metal, wood, and plastic.A 118-degree angle is the most common, but other angles, such as 135 degrees and 90 degrees, may be more suitable for specific materials or applications. It is measured in degrees and can range from 90 to 150. The drill point angle refers to the angle at which the cutting edge of the drill bit is ground. These are the three key design features of drill bits: Drill Point Angle To choose the best drill bits for metal and other materials, you should consider the design features that affect their performance. Disadvantages: They are the most expensive of the three materials, and they can be brittle, which can cause them to break if they're not used correctly.Advantages: This type is incredibly durable, can maintain its sharpness for longer than other drill bit materials, and can handle high-speed drilling.They are ideal for drilling through hard materials, including ceramics, glass, and masonry, as well as hard metals like stainless steel and cast iron.
Disadvantages: Cobalt drill bits are more expensive than HSS drill bits and require specialized equipment for sharpening.Ĭarbide (Carb) drill bits are made from tungsten carbide, which is a dense and durable material that can resist high temperatures and wear.Advantages: Cobalt drill bits are highly durable, resist wear and tear, and maintain their sharpness for longer than HSS drill bits.Cobalt drill bits are ideal for drilling through hard metals, such as stainless steel, cast iron, and titanium. They can withstand higher temperatures and are less prone to dulling. Disadvantages: HSS drill bits are not suitable for drilling hard metals, such as stainless steel, and can lose their sharpness quickly when used on tough materials.Ĭobalt (HSCO) drill bits are made from high-speed steel with added cobalt, which enhances their strength and heat resistance.Advantages: HSS drill bits are relatively affordable, easy to sharpen, and have a long lifespan when used correctly.HSS drill bits are suitable for drilling into soft metals, such as aluminum and brass, as well as wood and plastic. It contains tungsten, molybdenum, chromium, and vanadium, which provide increased strength and durability. High-speed steel (HSS) is a type of tool steel that is highly resistant to heat and wear. Here are the three most common types of drill bit materials: High-Speed Steel (HSS) Whether you're a seasoned metalworker or just starting, this guide will equip you with the knowledge you need to make informed decisions and achieve the best results. Therefore, it's essential to understand the various types of drill bits available and their unique features, including materials, coatings, point angles, and lengths. Using the wrong bit can result in damage to the material, decreased efficiency, and even injury to the user. But not all drill bits are made the same, and choosing the wrong one can lead to disastrous results. Drill bits are cylindrical cutting tools that are used to create holes in various materials such as metal, plastic, wood, ceramic tile, and concrete. One of the most important tools in any metalworker's arsenal is the drill bit.
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