Rework is the product or by-product that must be reprocessed due to a process failure, and must be 100% checked after being repaired and returned to the production line where it originated.

Rework occurs on most production lines in industry. It is something that already seems natural in the processes. Technically, rework is valid, but this validity has the condition of measuring and reducing it.
The origin of rework is in process failures and errors. If at the end of the work on a product does not turn out as designed, it is necessary to dedicate time to make the product conform to the specification.

It is one of the wastes and consists of performing an operation on a part that has turned out to be defective in a process with the objective of converting it into a correct part in accordance with the quality parameters and reincorporating it into the production line.

Examples of rework:

• Removal of excess castings
• Removal of burrs
• Rework and correction of cuts
• Design changes for serial parts up to the introduction of the modified tool.

Supplier Quality Control is in charge of reducing rework times while maintaining product quality through the standards previously established with the customer.