The reason of CNC machining scratch
1, it need to check processing parameters of CNC machine, it may be not set up the parameters of CNC machine properly.
2, on the other hand, the effective way to avoid scratches in CNC machine is to use boring not drilling.it may be wrong machining.
3, we should check the machining CAD to know that thickness of the work piece is thick or not, it can be twisted by a reamer.
4, it is also possible that in the process of CNC, the cooling water is slow and the water is not enough, and the chips can not be discharged.
5, CNC machining drill angle grind well, and you drilling speed is too high.
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