![]() High-Speed Steel with Cobalt: A high-speed steel with cobalt material can hold up better than generic high-speed steel. The cobalt gives high speed more resistance to heat and wear. And these bits can still be quickly re-sharpened, similar to high-speed steel.Ĭarbide: Carbide drill bits are the most expensive but durable drilling material. There are different grades, with the most expensive drill bits usually offering excellent heat and chip resistance. Carbide also allows coolant to be added through the holes in the drill bit. These through-drill bits are mainly for deeper holes and difficult-to-drill materials. High-Speed Steel: A high-speed steel bit is the most basic and least expensive drilling material for general use. In addition, it is very forgiving in both press and hand drilling operations. And it can be re-sharpened to extend its durability. Let’s start with the three most common materials from which the drill bit is made. To choose the right drill bit, we first need to dive into the following three fundamental aspects that separate one bit from another, including material, coating, and geometry. ![]() How to Decide How Much to Spen on Drill Bits How to Choose the Right Drill Bit.How Often Should a Drill Bit Be Resharpened.Drilling Cutting Conditions and Application Tips. ![]()
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