What are the advantages of 3D printing compared to CNC machining

As we mentioned earlier, 3D printing is a kind of additive manufacturing. Its principle is to cut the model into N layers/N multi-points, and then stack them layer by layer/point by point in sequence, just like building blocks. Same. Therefore, 3D printing can effectively process and produce parts with complex structures, such as hollow parts, while CNC is difficult to process hollow parts. CNC machining is subtractive manufacturing. It uses various tools running at high speed to cut out the required parts according to the programmed tool path. Therefore, CNC machining can only process rounded corners with a certain arc, but cannot directly process internal right angles. This must be achieved through wire cutting/sparking and other processes. CNC machining of outer right angles is no problem. Therefore, 3D printing can be considered for parts with internal right angles.

There are also curved surfaces. If the part has a large surface area, it is recommended to choose 3D printing. CNC machining of curved surfaces is very time-consuming, and if the programming and machine operation master is not experienced enough, it is easy to have obvious lines on the parts.

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