芯しん出だし

noun

centering; center alignment

Engineering term for aligning a workpiece or tool to the center of a machine, such as a lathe or milling machine.

• 旋せん盤ばんで加か工こうする前まえに、ワークの芯しん出だしをしっかり行おこなう。

  Before machining on the lathe, carefully center the workpiece.

• 芯しん出だしが不ふ十じゅう分ぶんだと、加か工こう精せい度どが落おちる。

  If centering is insufficient, machining accuracy will decrease.