Cone cutting drill bits are used for drilling different sized holes (or expanding pre-cut holes) in non-ferrous sheet metals and plastic.They are ideal for general use because they are very durable and resistant to heat and abrasion. High-speed steel (HSS) drill bits are designed for drilling through steel, copper, hardened plastic, iron, brass, cast iron and other difficult materials.Ground Flute Cobalt Standard / Jobber Drill Bit Image source: GTSE Drill bits for metal and plastic When choosing which drill bit to buy or use, consider its material, its strength and cutting power. It is important to make sure that you use the correct type of drill bit to match the material you are drilling into. Drill bits and their usesĭrill bits are used to drill small to large holes in stone, granite, marble, concrete, brick, plaster, plastic, steel, wood, composites, ceramic tiles, glass and much more. He wanted to develop a more effective way to drill a hole and gained a US patent for a twist drill in 1863. Before his invention, drilling was a slow and laborious process because drill bits were made from a pointed, sharp, flat piece of metal which overheated too quickly. Morse, from Massachusetts, invented the twist drill bit in 1861. The concept of a drill bit is thousands of years old, but the modern twist drill bit that we are most familiar with was invented around 160 years ago.Īmerican Steven A. Specialist drill bits go through additional processes such as split pointing. The bits are then cleaned, tempered, grounded, fluted and pointed. The steel goes through a process of cutting and heat treatment at extremely high temperatures, to harden the steel. How are drill bits made?ĭrill bits are made from different grades of raw steel which are delivered to manufacturing plants. The most common types of drill bits are designed with helix flutes and a cutting point, and are powered to cut holes by rotation and torque from a drill. What are drill bits?ĭrill bits are metal cutting tools used with drills to create holes in many different types of materials. Read on to find answers to some of the most frequently asked questions in our comprehensive guide to drill bits. There are thousands of different types, sizes and applications for drill bits. Drill bits are among the most common and essential accessories used in construction and DIY projects.
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