This speciality consists of machining a workpiece using a lathe. The workpiece is fixed in the lathe chuck in order to make it rotate and then to approach a cutting tool. The combination of these two movements allows material to be removed in the form of chips. The tools are manufactured according to the desired shapes.
![la-tournure](https://www.remygarnier.fr/wp-content/uploads/2021/06/la-tournure.jpg)
![la-tournure](https://www.remygarnier.fr/wp-content/uploads/2021/06/la-tournure.jpg)
With this technique, the turner can :
- Blanching the piece: remove the foundry skin.
- Shaping: restoring the deformed part to its cylindrical or conical shape.
- Enclave: to fit two pieces into each other to keep them in alignment.
- Crimp: the action of pushing the metal of one part onto another in order to make them both integral.
- Moulding: to create a decorative frieze on the surface of the piece using a tool called a moulding wheel.
On the lathe, parts are shaped by removing material and moving the tool over the part. This makes it possible to make the castings smoother and brighter.
![tournure-2](https://www.remygarnier.fr/wp-content/uploads/2021/06/tournure-2.jpg)
![tournure-2](https://www.remygarnier.fr/wp-content/uploads/2021/06/tournure-2.jpg)