DOES 3D PRINTERS COME INTO EXISTENCE FOR MACHINING PROCESSES IN REPLACEMENT OF CNC MACHINES IN FUTURE ?

I would agree with you if printing parts on a3D printer was really useful, if you don’t understand anything about this, just think about what kind of responsibility this is, especially if some novice designer is involved in selecting the part, I would advise you to contact david Saroni Lyon, maybe he can give you some advice, he has a lot of experience.

Yes, but the CNC machine works on 2D speed of 3D, because the size of the 3D is less than the 2D machines

Dear Sir, With the techniques of today I don't think so. A3-D printer builds up the model by adding layers. Doing this with metal under high temperature is something different ! This problem will be solved in time , but will it be cheaper then a CNC? Ad material expensive or cut material cheap.