Interpretation
In Argonautica, Apollonius notes that the ichor ran out like molten lead. A.B. Cook first suggested that the single vein closed by a nail or plug referred to the lost-wax method of casting; Robert Graves (whose interpretation of Greek mythology is controversial among many scholars) suggests that this myth is based on a misinterpretation of an image of Athena demonstrating the process of lost-wax casting of steel, which Daedalus would have brought to Sardinia.
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