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Readers were curious about pendulum saws, laser tweezers and more

Your letters and comments on the April 28, 2018 and May 12, 2018 issue of Science News

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7:00am, June 12, 2018

Cutting remark

Archaeologist Nicholas Blackwell built a version of a Bronze Age pendulum saw that may have been used to build Mycenaean palaces, Bruce Bower reported in “How a backyard pendulum saw sliced into a Bronze Age mystery” (SN: 4/28/18 & 5/12/18, p. 32).

Reader Fredric Blum argued that a pendulum saw’s blade would have dulled too fast to completely cut through stone without having to be replaced, making for an impractical saw.

Ancient Mycenaeans could have used the blades along with crushed emery to cut stone, Blackwell

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