Oxy/Fuel Cutting is one of the oldest processes to cut metals. A fuel gas and oxygen are fed from a cylinder through a hose to the torch where they mix creating a high temperature flame that allows localized melting of the workpiece material. In recent decades oxy/fuel cutting is less commonly seen in industrial applications but is still widely used in scrap yards, pipe cutting and some types of metal-based artwork. Oxy/Fuel has the added advantage of not requiring a source of electricity which makes it self-contained and often more portable. Additionally, the cutting torch can be used to weld and braze with a simple switch from the cutting attachment to a welding tip.

Common fuel gases include: