Biconical Drilling

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added byarchaeologs

A means of perforating beads or pendants for suspension. Accomplished by drilling in from both sides with a tapered drill resulting in an hour-glass-shaped hole.

added byarchaeologs

A means of perforating beads or pendants for suspension. Accomplished by drilling in from both sides with a tapered drill resulting in an hourglass-shaped hole.

Dictionary of Artifacts, Barbara Ann Kipfer, 2007Copied