Which statement about drilling holes on a drill press is true?

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Prepare for the Machinist Apprentice Level One Test. Utilize flashcards and multiple choice questions, complete with hints and explanations, to ensure readiness for your exam!

Multiple Choice

Which statement about drilling holes on a drill press is true?

Explanation:
Drilling a hole on a drill press is rarely exact in one pass. The drill bit itself has tolerance and wear, the workpiece can flex or shift, and the machine spindle may have runout or wobble. All of these factors mean the finished diameter is usually slightly off from the nominal size. In practice, you drill a hole to an undersize and then use a finishing operation—like a reamer or boring cut—to bring the hole to the exact specified diameter. Proper setup, sharp tools, and careful measurement help, but one drilling step alone rarely achieves a perfectly exact size. That’s why the statement describing drilling as not producing an exact sized hole is the best fit.

Drilling a hole on a drill press is rarely exact in one pass. The drill bit itself has tolerance and wear, the workpiece can flex or shift, and the machine spindle may have runout or wobble. All of these factors mean the finished diameter is usually slightly off from the nominal size. In practice, you drill a hole to an undersize and then use a finishing operation—like a reamer or boring cut—to bring the hole to the exact specified diameter. Proper setup, sharp tools, and careful measurement help, but one drilling step alone rarely achieves a perfectly exact size. That’s why the statement describing drilling as not producing an exact sized hole is the best fit.

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