Unnumbered source etymology
Original entry ↗A construction method for brazing steel sheets together by sandwiching copper sheets between them and performing an ersatz forge weld, for making Japanese-style blade steel. This method is used to add ornamental copper accents into forge-worked steel, such as a copper wave in a display blade. · A metal sandwich made by such a construction method
From translingual Cu (copper) + Japanese 枚 (“まい, mai”) (sheet). Modeled after gomai (“5 sheets”) and sanmai (“3 sheets”).
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"A construction method for brazing steel sheets together by sandwiching copper sheets between them and performing an ersatz forge weld, for making Japanese-style blade steel. This method is used to add ornamental copper accents into forge-worked steel, such as a copper wave in a display blade.",
"A metal sandwich made by such a construction method"
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