This archive report was first published on 18 July 2019.
Published on July 18, 2019, CNC machining has become a go-to method for producing high-accuracy metal parts. This manufacturing process involves using computer-controlled machines to cut away layers of material, resulting in precise and durable products.
What is CNC Machining? ¶
CNC machining is a subtractive manufacturing process that uses computer-controlled machines to cut away layers of material. This process is similar to 3D printing, but instead of adding layers to create the desired shape, machining cuts away layers of a block of material.
The process begins with a block of material, which is mounted on a spinning axis and introduced to a blade. The number of axes and the rotation capabilities of the machine define the shape that can be created with this process.
What Can Be Made with CNC Machining? ¶
Machining is used to produce high-accuracy parts, including gears, screws, tools, and end-use parts for larger mechanical designs. The most common materials used for this process are metal and plastic, with metal being a preferred choice due to its durability and ability to produce parts that are immediately ready to use.
A CNC-made part has several advantages, including high accuracy and structural integrity. However, the limits of CNC manufacturing are related to the shape of the items and the tools used to cut it, with geometric complexity being significantly more expensive with this process.
Several post-processing options are available for CNC-made parts, including smoothing, bead blasting, anodizing, and powder coating to achieve the desired finish. Before getting a CNC quote, consider whether a subtractive or an additive process would be more appropriate for the item.
How to Get a CNC Quote ¶
3D Hubs provides instant quotes for all forms of digital manufacturing, including CNC machining. To get a quote, upload a CAD file to the online manufacturing tool, and the program will immediately determine if the product can be made with the requested service.
