Picture 11 & 12: Here is the first steps, the part have now 4.5kg weights and we already have 2.5 kg of chips. Picture 13: Drilling the centers with centers drill. The four big one’s are corresponding to the axles of journal and crankpins. The small one’s are the future binding of the reductor gear. To make it easier, it is possible to program the DRO and have the right drilling postion following X &Y. As soon as the first face is finished, it is necessary to turn the part and to do the 4 centres once again. Take care at the right position of the milled flat it is very important!!!