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mandrel
This term is primarily used in technical, industrial, and artisanal contexts, such as machining, jewelry making, and manufacturing. It describes a tool that provides a rigid internal support or a rotational axis, ensuring that the workpiece maintains a precise shape or concentricity during processing.
In a workshop setting, the word is used as a concrete noun referring to the physical tool. It is distinct from a general "axle" or "shaft" because its primary purpose is to serve as a mold or a stabilizing core for another object being shaped around it.
Meanings
Examples
The machinist secured the workpiece onto the mandrel before starting the lathe.
Slide the gold band over the mandrel to check its size.
I need a tapered mandrel to shape this copper ring properly.
Make sure the mandrel is perfectly centered to avoid vibration during grinding.
Where did you put the steel mandrel for the pipe bending machine?
The part was rotated on a precision mandrel to ensure a concentric finish.
He used a wooden mandrel to wind the filament into a neat coil.
The mandrel must be hardened to resist wear from repeated use.