3. Waste of processing: This type of waste is more common than we imagine. I believe everyone has already seen cases in which an additional process is aggregated in order to solve a quality problem. I had an experience like this in Forging, where we were manufacturing the forged front axle of the vehicle. The process did not provide deburring after forging, but we used to do it due to a clearance of the tool that generated the burr in the forging process. The solution was simple: promoting a system of preventive maintenance of the tool So any element that adds cost and does not aggregate value to the product is subject to investigation and elimination.
4. Waste of movement: This type of waste is always present in operational tasks performed by operators in production processes. The ideal way of analyzing the waste of movement is with the deployment of Standardized Work, thus it is possible to analyze and reduce to the maximum the movements that do not add value to product and process
5. Waste of inventory: This type of waste refers to any material or product in an amount perior to the one immediately necessary to the subsequent process (customer). In an ideal state, if the flow between processes is balanced, the inventory would not have to wait until the material or product was processed.
6. Waste of reprocess and defects: This type of waste refers to products out of specification, and also includes reworking and products returned by customers.