Here is the Presentation on Non conventional machining method.

Machining is a broad term to describe removal of material from a workpiece.
Machining categories: Cutting involves single-point or multipoint cutting 2 ME 338: Manufacturing Processes II Instructor: Ramesh Singh; Notes: Profs. Singh/Melkote/Colton tools, each with a clearly defined geometry.
Abrasive processes, such as grinding.
Nontraditional machining, utilizing electrical,
chemical, and optical sources of energy.
Please find the file attached with it.