CNC Milling Service


Custom Precision Part CNC Milling Services

Mold7 massive network means that whatever your part, we have a shop and a machine that can make it. We support 3-axis, 4-axis, 5-axis milling, and right angle milling capabilities to help you rapidly create designs from simple straight lines to complex geometric shapes. We offers instant pricing, on-demand lead times, and design-for-manufacturability feedback on materials and manufacturing processes for your custom CNC milled parts, no matter your industry.

What is CNC Milling Service?

The Basics Of CNC Mills
CNC mills are automated cutting machines using a rotating spindle-head to cut away unwanted material. CNC milling machines come in a variety of sizes and different axis configurations. This manufacturing process is mainly utilized to cut harder metals but can work with workpiece materials ranging from plastic and aluminum to stainless steel and titanium.

How CNC Milling Works
CNC mills excel at profile cutting harder materials. Like all CNC machines, a CNC mill is controlled with G-Code created through CAM software. The Gg-Code instructs the machine where to move the tool head, how fast to spin the tool, how deep to cut, how to move the workpiece, and other factors relating to speed, feed rate, and coordination. The G-Code complexity depends on how many axes the milling machine has.


Custom CNC Milling Materials

Aluminum 5052
Aluminum 7075 & 7075-T6
Aluminum 6063-T5
Aluminum 7050-T7451
Aluminum MIC-6
Aluminum 6061-T6
Aluminum 2024-T3

Brass C360
Brass 260
C932 M07 Bearing Bronze

EPT Copper C110
Copper 101

Acetal [Delrin]
G-10 Garolite
Nylon 6/6
PTFE [Teflon]
Ultra-High Molecular Weight Polyethylene

Alloy Steel 4130, 4140
Stainless Steel 15-5, 17-4, 18-8, 303
Stainless Steel 303, 304, 316/316L
Stainless Steel 416, 420
Steel, Low Carbon
Steel A36
Titanium Grade 2, Titanium 6Al-4V, Zinc Sheet Alloy 500

CNC Milling Tolerances & Standards

Milled parts up to 80” x 48” x 24” (2,032 x 1,219 x 610 mm).

For features of size (Length, width, height, diameter) and location (position, concentricity, symmetry) +/- 0.005”.

0-12" +/- 0.005", Angularity 1/2 degree. For 24" and beyond please consult our Manufacturing Standards.
we can manufacture and inspect to tight tolerances per your drawing specifications including GD&T callouts.
0.020” (0.50 mm). This may vary depending on part geometry and chosen material.
we can accommodate any standard thread size. We can also machine custom threads; these will require a manual quote review.

Sharp edges will be broken and deburred by default. Critical edges that must be left sharp should be noted and specified on a print.

The standard finish is as-machined: 125 Ra or better. Additional finishing options can be specified when getting a quote.

CNC Milling Surface Finishes

The finish option with the quickest turnaround. Parts are left with visible tool marks and potentially sharp edges and burrs, which can be removed upon request. Surface finish is comparable to 125 uin Ra finish.

The part surface is media blasted, typically using glass bead, to produce a smooth, matte appearance.

Type II creates a corrosion-resistant finish. Parts can be anodized in different colors—clear, black, red, and gold are most common—and is usually associated with aluminum.
Type III is thicker and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II.

This is a process where powdered paint is sprayed onto a part which is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard painting methods. A wide variety of colors are available to create the desired aesthetic.

Don’t see the finish you need? Submit an RFQ and we’ll look into a finishing process for you.

FAQs List of CNC Milling Services

CNC Milling is a machining process that uses computer-controlled machines to remove material from a workpiece. The process involves a cutting tool that rotates against the workpiece to create complex shapes and designs.

CNC Milling can be used to machine a wide variety of materials, including metals, plastics, composites, and wood.

CNC Milling offers several advantages, including the ability to create complex shapes with high precision, faster production times, and the ability to create parts with consistent quality.

There are several types of CNC Milling machines, including vertical milling machines, horizontal milling machines, gantry milling machines, and five-axis milling machines.

CNC Milling is a computer-controlled process, while manual milling is controlled by a human operator. CNC Milling offers higher precision and consistency, while manual milling requires more skill and experience.

CNC Milling software can vary depending on the specific machine, but common programs include Mastercam, Fusion 360, and SolidWorks.

The maximum size of a workpiece that can be machined using CNC Milling depends on the specific machine, but it can range from a few inches to several feet.

The cutting tool for CNC Milling is selected based on the material being machined, the desired surface finish, and the required cutting speed and feed rate.

A roughing pass removes the majority of material from a workpiece, while a finishing pass removes any remaining material and creates the final surface finish.

The cutting speed in CNC Milling is determined by the type of material being machined, the hardness of the material, and the diameter of the cutting tool.

The feed rate in CNC Milling is determined by the desired surface finish, the depth of cut, and the cutting speed.

A toolpath is the path that the cutting tool follows during the machining process. It is generated by the CNC Milling software based on the desired shape of the workpiece.

A workholding device is used to secure the workpiece in place during the machining process. Common workholding devices include vises, clamps, and fixtures.

The accuracy of CNC Milling machines is typically measured using a coordinate measuring machine (CMM) or other precision measurement tools.

CNC Milling can help with prototyping by allowing for the creation of complex shapes and designs with high precision, which can be used to create functional prototypes.

CNC Milling Frequently Asked Questions

CNC Milling can help with production runs by allowing for faster and more consistent production times, which can reduce costs and increase efficiency.

A 3-axis CNC Milling machine can move the cutting tool in three directions (X, Y, and Z), while a 5-axis CNC Milling machine can move the cutting tool in five directions (X, Y, Z, as well as rotate about the X and Y axes). This allows for more complex shapes and designs to be created with a single setup.

A spindle is the rotating component of a CNC Milling machine that holds the cutting tool. It rotates at high speeds to create the desired cutting action.

A chip is the material that is removed from the workpiece during the machining process. It is created when the cutting tool comes into contact with the workpiece.

A coolant is a fluid that is used to lubricate and cool the cutting tool during the machining process. This helps to prolong the life of the cutting tool and improve the surface finish of the workpiece.

A fixture is a workholding device that is used to hold the workpiece in place during the machining process. It is often custom-designed to fit the specific shape and size of the workpiece.

The toolpath is programmed using CNC Milling software, which allows the user to create a 3D model of the desired shape and then generate the toolpath based on that model.

Spindle speed refers to the speed at which the spindle rotates during the machining process. It is typically measured in RPM (revolutions per minute) and can vary depending on the material being machined and the size of the cutting tool.

Feed rate override is a feature that allows the user to adjust the feed rate during the machining process. This can be useful for fine-tuning the cutting parameters to achieve the desired surface finish.

Rapid traverse rate refers to the maximum speed at which the cutting tool can move between cuts. It is typically faster than the cutting speed and is used to move the cutting tool quickly to the next position.

CNC Milling can be used for engraving by using a small cutting tool to create fine details and designs on a workpiece. This can be useful for creating personalized items or decorative elements.

CNC Milling can be used for mold making by creating a negative mold of the desired shape and then using that mold to cast the final product. This can be useful for creating high-quality, precision molds for a wide range of applications.

A work offset is a value that is used to adjust the position of the cutting tool relative to the workpiece. This can be useful for ensuring that the tool is properly aligned with the workpiece and that the desired shape is created.

Cutter compensation is a feature that adjusts the position of the cutting tool based on its size and shape. This can be useful for ensuring that the tool is properly aligned with the workpiece and that the desired shape is created.

CNC Milling can be used for 3D printing by creating a negative mold of the desired shape and then using that mold to create a 3D printed object. This can be useful for creating high-quality, precision 3D prints.

Advantages of CNC Milling Services

Rapid Turnaround
Using the latest CNC machining capabilities, we produces highly accurate, quick turn parts in as fast as 1 day. We also instantly quote CNC machined parts, cutting days off of your RFQ process.

High Precision Tolerances
Offers high-precision tolerances ranging from +/-0.001″ – 0.005″, depending on customer specs. We are the experts in making parts that are truly custom and ready to use.

CNC machining processes are perfect for prototyping and production CNC parts. mold7's massive scale can help you scale up from testing phase to production runs of 100,000 parts of more.

Material Selection
Choose from over 50 metal and plastic materials. CNC Machines offer a wide variety of certified materials.

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