Afterwards, products which are already in right dimensions are moved to multi dimensioning machine whereas, others are moved first to side cutting and then to multi dimensioning machine. At this step, raw materials which are more than 3 cm thick go through horizontal cutting operation and their thicknesses are decreased to be less than 3 cm. After these operations, products go through three headed or four headed honing machines to be cut according to their geometric shapes. Finally, these products are washed and dried. After drying operation, products in the wheelbarrow are moved to final selection area. In this area, products go through another selection operation. The qualified ones are packaged and become ready for sale. Products are transferred one by one between operations except from the entrance to the selection operation. The current layout of the factory is given in Figure 3. At first, the production area is analyzed and the data is collected. The processing times of each product on each operation, the demands of products, the arrival rate of the demands are calculated by fitting the appropriate distributions. The Input Analyzer module of the ARENA 10.0 [11] is used for these calculations