In our initial trials, we achieved superior performances in every aspect from the ceramic tool, we were compelled to expand the research on this subject. We are aware that the moulds used in aviation industry have bigger dimensions. The materials that are used to prepare the ceramic moulds generally have a shrinkage between 3% and 14%. For this reason, it was not possible to prepare ceramic moulds for parts that are 3-4 meters in size. We noticed that a natural stone that we had been familiar with for a very long time was suitable for usage in this process. Coincidence and practicality opened us this door. As we entered this door, many things became easier. We were constrained by the financial and technical restrictions that we were facing, but we were able to overcome these barriers with determination and patience. We start by obtaining a mass in the necessary measurements for the mould to be prepared. We process it in vertical CNC machines using the prepared CAM program. We coat the surface with a specifically formulated ceramic clay. After a specific period of drying, we fire the finished mould in ovens at 1040°C. Later we finalize the dimensions in the vertical CNC machine. After necessary measurements and controls, the mould is glazed and fired at 820°C. After all these processes, the mould is ready for use.

The most important advantage of our moulds is that we can achieve a surface roughness of Ra = 0,08 mm. With other methods, it is not possible to achieve these results. The moulds do not have a problem of expansion. The material that is used in mould. preparation. has a..CTE of 6.3774 10 ^-6 /°C at 200  °C, so the planned dimensions of the mould do not change. The thickness is around 10-15 mm varying according to mould dimensions, so it is possible to achieve desired mould heat in a shorter time. This enables energy savings and curing the resin in the normal period of time. Another advantage of this method is that it eliminates vacuum leakage. Our moulds are relatively lighter than all metal moulds, and since the cured composite does not stick to the surface of the mould, the parts are easily released from the moulds.

Our patent application resulted with success on 22nd June 2010. When we received the document for the granted patent, all difficulties and exhaustion was instantly forgotten; was replaced by contentment and pride instead.