![]() In very small sizes it is difficult to fit carbide tips in some industries, most notably printed circuit board manufacturing, requiring many holes with diameters less than 1 mm, solid carbide bits are used. However, it is becoming common in job shops to use solid carbide bits. The material is expensive and much more brittle than steels consequently they are mainly used for drill-bit tips, small pieces of hard material fixed or brazed onto the tip of a bit made of less hard metal.
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