• CNC Milling

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CNC Milling

Our CNC milling process produces custom prototypes and end-use production parts in as fast as 1 day. We use 3-axis milling and 5-axis indexed milling processes to manufacture parts from more than 30 engineering-grade plastics and metals. With machined production parts, you can also get more competitive pricing at higher quantities in addition to first article inspection (FAI) reporting, material certifications, and additional finishing options like anodizing and chromate plating.

How Does CNC Milling Work?

We have multiple toolsets based on efficient cutters for a particular plastic or metal material. The machine then rapidly mills parts out of the block in a subtractive manufacturing process that uses either 3- or 5-axis milling.

Machined plastic parts are left as-milled, which typically means they show visible tool marks. Some metal parts allow more finishing choices. When the run is complete and your required surface finish is applied, parts are boxed and shipped shortly thereafter.


Watch: Reducing Machining Costs

See how key design and material considerations can reduce your machining expenses.

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Threaded Holes on Machined Parts

Our CNC machining service provides the ability to easily add threaded features to milled and turned parts. See which threading options are available.

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Design Guidelines

Our basic guidelines for CNC milling include important design considerations to help improve part manufacturability, enhance cosmetic appearance, and reduce overall production time.


Milling Materials

We stock more than 30 production-grade plastic and metal materials that are suitable for various part applications and industries. Materials range from plastics like ABS, polycarbonate, nylon, and PEEK to aluminum, stainless steel, and copper.


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CNC Material Selector

Learn about specific measurements like tensile strength, heat deflection, and hardness when selecting CNC Machining materials.


How to Design Efficient Parts for CNC Machining

Learn a number of ways to modify your CNC machining design to not only improve functionality, but reduce manufacturing costs.

Design for Manufacturability

View a CNC machining sample quote to explore ProtoQuote’s design for manufacturability feedback.

How to Reduce CNC Machining Costs

Use these design and material considerations to cut your machining costs.

Free interactive design analysis within hours