De-burring is a manufacturing process that is used to remove the small burrs or rough edges left on a workpiece after it has been cut or machined. Burrs are small protrusions of material that can form along the edges of a workpiece during the manufacturing process. They can be sharp and jagged, and can pose a safety hazard if they are not removed.

De-burring can be done using a variety of methods, including manual techniques like filing or sanding, as well as automated methods such as tumbling, blasting, or grinding. The specific method used depends on the size and shape of the workpiece, as well as the desired level of precision.

De-burring is an important step in the manufacturing process because it can improve the quality and accuracy of the final product, as well as reduce the risk of injury to workers and end-users.