Discussion
Which of the following cannot be used for taper turning?
Answer: D
The answer is None of these: every method listed can turn a taper.
The compound rest is swivelled to half the included angle and fed by hand, which suits short, steep tapers. The tailstock offset method moves the tailstock centre sideways so that work between centres is turned at a slight angle, which suits long, gentle tapers. A form tool ground to the taper angle plunges straight in to produce a short taper or chamfer.
The fourth common method, the taper turning attachment, is simply not listed. Since none of the three listed methods is unusable, none of them can be the answer.
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