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543
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3. Drill Bit Size The size of the drill bit determines the size of the hole you can drill. Larger bits are used for larger holes, while smaller bits are used for smaller holes Larger bits are used for larger holes, while smaller bits are used for smaller holes
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2200
Twist drills, with their helical cutting edges, became the standard for 75mm drill bits in the 1960s. These drills cut by shearing the material and ejecting it through the flutes, resulting in cleaner holes with less material buildup. The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels The development of twist drills also led to the refinement of drill bit geometry, including the addition of secondary cutting edges and better chip evacuation channels
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2109
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