Difference between CNC Rapid Prototyping and 3D Printing

First of all, 3D printing is a material increase technology, and CNC Rapid Prototyping is a material reduction technology, so they are very different in materials.

1. Differences in parts due to the forming principle
2. Differences in operating software
3. Differences in materials

CNC Rapid Prototyping Metal Prototyping Service Content:

Differences in materials

Three-dimensional printing materials mainly include liquid resin (SLA), nylon powder (SLS), metal powder (SLM), gypsum powder (full-color printing), sandstone powder (full-color printing), wire (D FM), plate (LOM), Liquid resin, nylon powder and metal powder occupy the vast majority of the industrial 3D printing market.

The materials used in CNC rapid prototyping are all plates, which are plate-like materials. By measuring the length, width, and height of the parts + wear, the plates of the corresponding size are cut for processing. CNC rapid prototyping materials are better than 3D printing. Generally, hardware and plastic plates can be processed by CNC lathes, and the density of the molded parts is higher than that of 3D printing.

Differences in parts due to the forming principle

As we mentioned earlier, 3D printing is a kind of additive manufacturing. Its principle is to cut the model into multiple layers, and then stack them up layer by layer, just like building blocks.

Therefore, 3D printing can effectively process and produce parts with complex structures, such as hollow parts, while CNC machining is difficult to realize hollow parts processing.

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CNC machining is a kind of material reduction manufacturing.

Through the high-speed operation of various tools, the required parts are cut out according to the programmed knives.

Therefore, CNC lathe machining can only have rounded corners of a certain arc, but can not directly process right angles, which can be realized by wire cutting technology.

External right-angle metal prototyping is no problem. Therefore, the internal right-angled parts can be considered to choosing CNC Rapid Prototyping.

It is also the surface. If the surface area of the part is relatively large, it is recommended to choose 3D printing. Precision CNC machining the surface is very time-consuming, and if the programming and operating machine masters are not experienced enough, they cannot leave clear patterns on the parts.

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Differences in operating software

Most of the 3D printing slicing software is easy to operate, even a layman can use the slicing software proficiently for a day or two under professional guidance. Because the slicing software is very easy to optimize, the support can be automatically generated, which is why 3D printing can reach individual users.

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Numerical control programming software is much more complicated and requires professionals to operate it. People with zero basic knowledge generally need to learn about half a year. In addition, a numerical control operator is required to operate the CNC machining machine.
Because the programming is very complicated, a component can have multiple CNC machining schemes, and 3D printing will only place a small part of the processing time on consumables, which is relatively objective.

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