Granted, not every artifact was as complex as the Antikythera mechanism, but still ... There must have been a source of heat for working the brass and bronze materials of the original.

This is a working model of the Antikythera mechanism made from Lego pieces. In the video, which you absolutely can’t miss after the break, The machine is disassembled into its various components.

The Antikythera mechanism (/ˌæntɪkɪˈθɪərə/ AN-tih-kih-THEER-ə ... to predict eclipses and to model the irregular orbit of the Moon, where the Moon's velocity is higher in its perigee than in its ...