Various engraving techniques are used at Caran d’Ache for the customisation of writing instruments:

Laser engraving is a non-contact process. The marking is created by an intense light beam that fuses the material it touches. Mirrors guide the light beam precisely over the surface to be engraved.

Diamond engraving is performed using the point of a diamond cutter. It is used to personalise a pen, engraving the desired message with absolute precision and superb quality. This technique does not remove any material from the pen.

The milling cutter engraving is a process where the material is removed with a steel cutter.