Online CNC machining service

With our specialized, experienced and industry-leading technology,On-demand CNC machining for rapid prototyping and production parts.

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CNC Machining Capabilities

Accurate, efficient, reliable! Focus: excellent CNC machining. With ISO9001 & ISO13485, professional experience, advanced tools, ensure precise parts, timely delivery.

Our Ordering Process

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Upload CAD file


Securely upload your part design to our online quote builder 

Receive instant quote 


Our engineers provide precise quotations for you 



Procure materials and produce parts according to the quantity required

Quality control 


Quality inspection department inspects the parts according to the drawings 





Gallery of CNC Machined Parts

Explore our custom turning parts tailored for you, spanning rapid prototyping, low-volume, and mass production orders.

CNC machining materials

Based on specific application needs, you can select suitable materials to meet performance, durability, and cost requirements. The flexibility of CNC machining means you can choose the most appropriate materials for different project demands.



CNC machining surface finishes

Our surface finishing options can be tailored to meet the needs of different projects, ensuring turned parts meet appearance and performance requirements.

As Machined

Deburr  ⁄  As Machined


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Bead Blasting

Bead Blasted


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Heat treatment

Heat Treatment


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Anodizing Type Ⅱ

Anodizing Type II


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Anodizing Type Ⅲ

Hardcoat Anodizing


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Black Oxide

Black Oxide


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Zinc plating

Zinc Plating


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Chromate Plating

Chrome Plating


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Nickel Plating


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Powder Coating


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Laser Engraving

Laser Engraving


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Threaded Inserts

Threaded Inserts


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Mold Texturing

Mold Texturing


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Why Choose Us for CNC Machining

Get instant CNC quotes by uploading your design files, including color, material, surface treatment, and required quantity, without the need to write a quote request email.

PROTO MFG’S CNC Machines are built to provide maximum accuracy whether they are tasked to produce one metal machined part or thousands of machined parts.

PROTO MFG’S tolerance Can be 0.005 to 0.01 mm

Direct from CNC machining factory, offering cost-effective solutions for your precision parts needs.

The Proto’s Standard

PROTO MFGs Tesla Supplier Code: 204021

PROTO MFG Obtains ISO 13485:2016 Management System Certification

Wonderful Factory Trip

Our CNC Machining Center


ISO 13485:2016
ISO 9001:2015

Our CNC Machining for Specialist Industries Applications


1.Required strength

Consider what type of strength characteristics are needed for the part, such as tensile strength, compression strength, or yield strength. The material choice will depend on the intended application and the load that the part will be subjected to.


2.Wear resistance

Consider whether the part will be subjected to abrasion or friction and choose a material that can withstand those conditions for the required duration of use.


3.Corrosion resistance

Consider whether the part will be exposed to harsh environments that could cause corrosion or rust over time, and choose a material that can resist or minimize these effects.



Consider whether the material will be easy to machine and produce good surface finishes without excessive tool wear or breakage.



Consider the cost of the material, taking into account how it will affect the overall cost of the part, including machining costs, finishing costs, and any subsequent assembly requirements it may have.

The cost of plastic CNC machining depends on the complexity and size of the part as well as the type of plastic that is used. These variables will influence the type of machine that is required, the time it takes to produce the part, and the cost of the raw material.

We use machine learning algorithms to calculate the exact cost of any machinable part directly from a CAD file, based on millions of CNC machining orders we’ve previously processed. Simply upload a CAD file to generate a quote: Get an instant CNC machining quote.

Metal machining is a manufacturing process that involves cutting a piece of raw metal until a final desired shape or object remains. With CNC metal machining, unwanted geometry is cut from a raw block of metal, bit by bit with a computer numerically controlled (CNC) milling or turning cutting tool, very precisely and allows complex parts to be produced with great accuracy.

The standard prototype and production machining tolerance at Protolabs is +/- 0.005 in. (0.13mm). This means any part feature’s location, width, length, thickness, or diameter will not deviate by more than this amount from nominal. For example, the 1 in.

ISO (International Organization for Standardization) created ISO 2768 as an international manufacturing standard that simplifies drawing specifications for CNC machining tolerances. Creating this international standard and its implementation make designing and manufacturing more accessible and convenient.

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