plug and feather
noun1
A technique used to split stone, using a metal wedge (the plug) and two tapering shims (the feathers).
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A technique used to split stone, using a metal wedge (the plug) and two tapering shims (the feathers).
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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