Spiral Turning Device

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An illustration of creating spirals on a steel rod using mandrel and lathe. The spiral is created by revolving the steel rod on the lathe while placing a mandrel on the rod at an angle.

Source

Grimshaw, Robert Modern Workshop Hints (Philadelphia, PA: Sampson Low Marston & Company LTD, 1902)

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2400×1436, 279.2 KiB

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1024×612, 51.6 KiB

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640×382, 28.5 KiB

Small GIF

320×191, 11.0 KiB