![]() ![]() The “Morse taper” shank, which requires a conical chuck corresponding to the Morse taper.The cylindrical shank with parallel flat, standard ISO 9766.There are three types of shanks for machine tool drill bits: Masonry bits are always used with rotary hammers or hammer drills. It is easy to distinguish in your toolbox because its tip is often made of tungsten carbide. Masonry drilling: the masonry drill bit is suitable for brick and concrete.You should always slow down the speed to prolong the life and performance of the core bit. Drilling metal: drill bits or hole saws include a core bit and a point to guide them.Drilling in wood: drill bits designed for drilling wood (or wood drill bits) usually have a sharp tooth at the head of the bit to facilitate centering.There are drill bits with specific geometries depending on the materials to be drilled. This type of drill bit is the best suited if you want to drill sheet metal. You can drill holes of different diameters in wood, metal and plastic, all with one drill bit. Step drill bit or unibit: this drill bit is conical in shape, with a stairstep-like pattern.Since these are general purpose bits, they are a good choice if you don’t have a specific project in mind. In general, twist drill bits do not need pilot holes because they are self-centering. However, they are not suitable for masonry. Twist drill bit: this is the most common type of drill bit, it is used to make holes in wood, metal, plastic and many other materials.There are several drill geometries available: ![]()
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