見み切きり線せん

noun

boundary line; edge line; break line

Technical term used in design, drafting, and manufacturing to indicate a line where a part is cut, folded, or separated. Often seen in CAD, sewing patterns, and sheet metal work.

• この図ず面めんの見み切きり線せんに沿そって材ざい料りょうを切せつ断だんしてください。

  Please cut the material along the break line on this drawing.

• 型かた紙がみの見み切きり線せんをはっきりと描かいておく。

  Clearly draw the cutting line on the pattern.