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Over-production in layman does not seem to cause a problem, actually will increase the existing stock product. So at any time if needed can be sent directly to the customer Over-production here could be interpreted to produce the product does not comply with the request eventually makes the excess stock. This excess stock will cause the problems that have to do with quality. In the context of lean manufacturing, over-production is the waste which must be removed from production systems. The principle of lean manufacturing is to produce products according to customer specifications and demand. If the product exceeds the demand may be indicated occur extravagance.

Lean Production is a way to make workers and work more flexible and efficient by using the four principles: 1 Minimize waste. 2. Make perfect quality since the first opportunity 3.Lini flexible production 4 Continuous Improvement In facilitating the four principles above, there are the main characteristics that must be done, including: 1 Improvement of mass production. 2 Producing flexibly to varying product. 3 Focus on the process plant. 4 Emphasis on supplier management and the efficiency of resource usage. 5. detailed production schedule .. Doing four lean production principle with regard 5 characteristics, then the workers will be achieved flexibility and efficiency of their work. But it must be done continuously in every production, even though the things we want has been reached. Point for production over time will be well and happy and satisfied single worker doing his job.

Lean production starts as a manufacturing technique to improve the efficiency and profitability . Its primary focus is the elimination of waste output speed . Trash is anything that does not add value to the final product . Many manufacturing industries other than the now adopting lean principles . History Henry Ford was one of the first to understand and employ workflow automation for mass production . About 25 years later , Kiichiro Toyoda , Toyota did a lot of revision of thinking Ford and developing the Toyota Production System , which focuses on matching engines for workflow , fast production setup and change the engine to support a variety of products and the elimination of waste . Value- Added The focus of lean manufacturing is the value . Each step or process that adds value to the final product will be stored . Anything that does not add value is waste and should be eliminated . Assess the added value of the function is the first step in lean production . After that , we will

Creating a quality product design should stick to the efficiency and effectiveness of manufacturing. Lean manufacturing focuses on the savings in all production lines must remain the reference. Indeed the general product quality must be built with raw materials, machinery and processes are also expensive. But that does not mean having to add production machinery if there are changes in product design or any new product. Trends and design changes may often occur in the course of making products that meet the standards of customer demand. However, the appropriate design expertise with production machinery that exists is the main priority in order to obtain maximum benefits.