CNC machining aluminum for your Custom Machined Parts

CNC aluminum machining service

we 3Q MACHINING offer professional CNC aluminum machining service (CNC) that is processes including of cnc milling, cnc lathe, cnc turning, EDM, plus anodizing surface treatment, to make any custom design parts with high-precision dimension. The cnc machining technology, which was first developed in the 1970s, has now become an industry standard in many countries.

Our CNC aluminum machining service helps global customers to manage their operations and custom parts more efficiently. We have rich experience engineers to reduce labor & machining costs by cutting out time-consuming manual tasks and automating repetitive tasks, that helps to improve profit margin and save lead time for our valuable customers.

Our CNC aluminum machining service is not just limited to large volume orders, it’s no MOQ to produce small order which start from 1 pcs as fast as 3 days. 

CNC aluminum machining service

Aluminum alloys are the one of most widely used non-ferrous metal materials,it is low density, light weight, easy processing and diversified surface treatment effect. About 80% of the rapid prototypes are made from aluminium alloys.The density of aluminium alloy is 2.7 kg/m that only one third of the density of steel (7.85 kg/m).

Aluminum alloy is good forming ability by numerical control processing, bending, stretching,it enables this material to be used in a wide range of applications,such as auto parts,medical devices,engine parts etc. 

Why is Aluminium good for machining? Custom Aluminum CNC Machining Parts from 3Q MACHINING

  • Excellent corrosion and chemical resistance
  • High strength-to-weight ratio
  • Good heat and electrical conductivity
  • Easily machined
  • Reflects heat and light
  • Recyclability

Machining aluminum is a common operation in many CNC Machining Manufacturing Plants. The process involves milling, turning, drilling and other machining operations which are complex and require high precision. CNC milling machines provide higher accuracy and repeatability in the process of machine cutting or machining aluminum sheets and plates.

Can you CNC mill aluminum?

Can you CNC mill aluminum?

The answer to the question is yes. There are many ways that you can cnc mill aluminum. You can use a milling machine, a drill press, or an end mill.

You can make aluminum parts for your car, boat, or airplane with a CNC milling machine. It’s also possible to make intricate shapes with a CNC mill when combined with cutting fluid and coolant.

CNC machined aluminum is a metal that is used to produce a wide range of products from furniture to semiconductor chips. The metal is mainly made from the combination of aluminum and copper, with some iron and nickel.

CNC machined aluminum can be used in a variety of industries, but it is most commonly found in the aerospace industry. It has been used in everything from passenger planes to military aircrafts.

What is CNC machined aluminum?

The CNC machining process starts by cutting sheets of aluminum using computer aided tools or by hand. This gives the metal a glossy finish and reduces its weight. It will then be ground down before being cut into specific shapes for manufacturing purposes.

CNC machining is the process of cutting away material from a solid block by making a series of very fine cuts. The blocks are cut with the help of a computer numerical control (CNC) to make a specific design or pattern.

CNC machines are utilized to cut through metal. They use rotary cutting tools such as end mills and drill bits to machine, grind, or cut metal.

CNC machines can cut through aluminum by having the right cutting tool and properly programmed machine tools.

CNC machines can cut through aluminum

Use a wood-cutting saw with carbide-tipped blades to cut most aluminum. Select a fine-toothed blade and don’t cut aluminum with a wall thickness of more than 14 inch (0.64 cm). If possible, choose a saw blade that creates narrow kerfs (the notch or slot made by the saw).


The answer is yes. Aluminum can be routable with CNC router.

In the current situation, the most common way to route aluminum is to use a milling machine or a drill press. However, if you have a CNC router, these options will no longer be necessary. This requires some planning and precise machining, but it’s possible.

Welding and cutting aluminum 6061 is a common engineering practice. There are many different types of aluminum available for machining, but which type of aluminum should we use?

Aluminum 6061 is the most commonly used aluminum for machining. It has high strength and excellent corrosion resistance as well as good weldability and fabricability.


What Aluminum grade should be best suitable for your project?

Aluminum 6061:This grade is mainly contains magnesium and silicon, so it concentrates the advantages of the aluminum of 4000 series and 5000 Series,6061 is a cold-treated aluminium forging product, which is suitable for applications requiring high corrosion resistance and oxidation resistance. It has good usability, easy coating and good workability.

Aluminum 5052:The main characteristics are low density, high tensile strength and high elongation.It can be easily drawn or formed into intricate shapes,Suitable for bending and welding.

Aluminum 7075:This is commonly known as “super hard aluminium”,one of the highest strength aluminum alloys.Good mechanical properties and anodize reaction,but it is not weldable and has limited resistance to corrosion ,it is ideally used for highly stressed parts,, representative uses are aerospace, die processing, mechanical equipment, tooling fixtures, especially for manufacturing. Aircraft structures and other high-stress structures requiring high strength.

Aluminum 2024:The characteristics of aluminium2024 ishigh hardness,also the content of copper is the highest, about 3-5%. 2024 series aluminium barmost common used for Aviation material, which is not often used in conventional industry at present.

Aluminum 6063:Commonly known as an architectural alloy. It is suitable for all kinds of industrial structural parts with high strength and corrosion resistance, such as trucks, tower buildings, ships, trams, railway vehicles, furniture, machinery parts, precision die manufacturing, electronic parts and precision instruments, SMT, PC board soldering tin carrier electronics, etc.

Aluminium machining is a popular process in the industry. The material is lightweight and strong, which makes it a favorite for many engineers and designers. It can be machined to different tolerances and shapes.

Aluminium is easy to machine with tools like milling, turning, and drilling. There are plenty of aluminum alloys on the market, but some of the most popular ones like 6061 and 2024 are also some of the easiest to machine.

Aluminum is often used in CNC machining because it is easy to machine.

Aluminum is one of the most popular metal alloys used in CNC machining. It has a good thermal conductivity and has a high strength-to-weight ratio.

There are many different types of aluminum and it can be difficult to determine which aluminum type is best for your project. Aluminum alloys vary in the amount and type of alloying elements and their physical properties vary widely as a result.

What type of aluminum is used for CNC machines?

What type of aluminum is best used for CNC machining?

Aluminum 6061

The best type of aluminum used for CNC machines is the 6061 Aluminum. It’s often used because it has a low density and is easily machined. It also has good mechanical properties, strong corrosion resistance, and good weldability.

There are a number of factors that determine how thin you can make aluminum, but the main factor is the type of machine you use.

The extrusion machine cannot generally produce metal sheets thinner than 0.006″ (6 mil).

A CNC router has a much higher limit for cutting materials. It can usually cut metals up to 0.02″ (2 mil) thick.

How thin can you CNC aluminum?

-Can you router thin aluminum?

For a long time people have been asking whether they can use steel or aluminum when routing.

Since there is a difference in the thickness, not many people are sure if you can router thin aluminum.

The answer is yes, it is possible to router aluminum.

But with this you will need to set your router properly and be careful not to overheat it.

While steel would need more force to get through the material, you will need less pressure when working with aluminum because of the softness of it.

-How much thin of aluminum parts you can make by CNC?

The thickness of thin aluminum machined parts is the range between 1.25mm and 10 mm.

The thickness of thin aluminum machined parts should be less than 12 mm, which should be sent to anodizing.

For aluminum plate thickness, it can be machined up to 3.2mm if the surface is not anodized and up to 3 mm if the surface is anodized.

-How much precision you can make aluminum cnc machining parts?

Metalworking is a process of shaping metal by lapping, cutting, trimming, sanding, drilling, turning or boring to the desired shape. Metalworking is done by cutting away unwanted metal. For aluminum machined parts, precision grade is one of the most important factors to consider.

There are three standard grades for aluminum machined parts: 0.2mm Precision Grade (0.025mm), 0.4mm Precision Grade (0.05mm) and 0.6mm Precision Grade (0.063mm). The smaller the precision grade gets, the higher degree of detail you can make on your machined part because there are more accurate measurements on the part itself.

Aluminum CNC Machining Processes

CNC Machining Aluminum Processes

CNC aluminum machining at 3Q MACHINING is a process that enables the production of fully-finished products in a wide range of shapes and sizes.

There are many different types of CNC aluminum machining including: external, internal, and three-axis machine, four-axis machine, five-axis machine.

External CNCs are used when processes require close tolerances or require high speed.

Internal CNCs have an offset tooling system that allows the tool to move vertically with respect to the spindle axis. This allows for more complex features such as blind holes and screw bosses in shorter tools with less material removal.

3/4/5-axis machines have a horizontal spindle axis and a vertical spindle axis which can potentially allow for more advanced workpieces with several different geometries.

CNC machining is a process that turns raw material into a finished part. CNC is an acronym for Computer Numerical Control.

The most common use for this technology is in the manufacturing of metal parts, including aluminum parts. In this article, we will explore the steps that must be taken in order to cut aluminum by cnc.

The process starts with a CAD model of the part being carved out on a CNC machine’s cutting bed by the path planning software. The accuracy of this step depends on how accurate the CAD model is and how well it was created to represent what it will be when it cuts through the metal sheet. If there are any errors in either of these stages, then there will be errors when the CNC machine cuts through the sheet making.

How can CNC cut aluminum?

Here are 12 tips for Cutting Aluminum by CNC:

Before cutting, prepare the machine and parts. You will need a CNC machine, CNC controller, workpiece, material tooling, and cutting software.

1. Designing the part by CAM software

2. Preparing aluminum raw material stock: -Measure your material according to how long it is and how wide it needs to be cut; make sure all dimensions correspond before cutting anything.

3. Set up the machine to the desired specifications

4. Feed the material into the machine

5. The machine will create a toolpath

6. After cutting, make sure to clean up after yourself

7. Put away all of your tools

8. Turn off any power outlets or shut down any machines in use

9. Lock up your workspace

10. If you are using a cnc mill, use a vacuum cleaner to clean up chips that are left on your work area

11. Keep equipment in good working order by making sure to check for any damage or wear

12. Stay safe by wearing safety equipment.

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How Much aluminum CNC machining cost

Aluminum machining cost varies depending on the material, size of the product, complexity, and machine selection.

The cost of aluminum machining can be broken down into two primary categories: material costs and labor costs. The primary materials include aluminum rods or sheets with a thickness less than or equal to 0.25 inches or below 0.065 mm, while the secondary materials are used to obtain desired shapes out of aluminum rod or sheet pieces by means of cutting, grinding, welding, etc.

Labor costs are based on two factors: number of work hours and labor rates per hour for cnc machinists that are directly involved in the process

For example, with a CNC machine, the cost of aluminum machining can be calculated based on the following factors: tooling costs, material costs, overhead costs, machine cost and labor cost. The hourly rate for a  cnc aluminum machine can also give a person an idea of how much it would cost to make a certain amount of aluminum machining. For example if a company wants to make 100 units of aluminum parts which will require 5 hours work per unit at a cnc machine costing $9000/hour then it will cost $450/unit or $4500 total for making 100 units aluminum machined parts.

Alternatives to aluminum material for CNC machining

Businesses may seek alternatives to aluminum for CNC machining for any number of reasons. After all, the metal has a few weaknesses: its oxide coating can damage tooling, and it is generally more expensive than alternatives like steel, partly due to the high energy costs of aluminum production.

Here are some potential machining alternatives to aluminum, with an emphasis on their differences and similarities to the popular silver-gray metal.


Conductivity (S/m) at room temperature


59.6 million


37.7 million


16.9 million


10 million

Carbon steel

7 million


2.4 million

Stainless steel

1.5 million

Stainless steel cnc machining

Stainless Steel

Brass cnc machining

Brass Copper

Steel & stainless steel

Better than aluminum for:

  • Strength
  • Temperature resistance

Worse than aluminum for:

  • Machinability
  • Weight

Steels and stainless steels are widely used materials in CNC machining. Because of their high strength, steels tend to be favored for high-stress applications and those that require strong welds. Steels are resistant to very high temperatures, and stainless steels can be heat treated to enhance their corrosion resistance.

However, while machining steels are engineered for improved machinability, aluminum remains the more machinable of the two materials. Steels are also heavier and have a higher hardness than aluminum, which may or may not be desirable depending on the application.

If temperature resistance is a key consideration and weight is not, steel may be an ideal alternative to aluminum.


Better than aluminum for:

  • Strength-to-weight ratio

Worse than aluminum for:

  • Cost

Titanium may be used as a like-for-like replacement for aluminum since its primary advantage is an exceptional strength-to-weight ratio — also one of the main benefits of aluminum. Titanium has a similar weight to aluminum but is almost twice as strong. Like aluminum, it is also highly resistant to corrosion.

These advantages are reflected in the higher price point of titanium. Though the material is an excellent choice for parts like aircraft components and medical devices, its cost can be prohibitive.

Titanium is a suitable alternative to aluminum when lightweight is a primary concern and, importantly, when the manufacturing budget has some flexibility.

Brass Copper


Better than aluminum for:

  • Some aesthetic applications

Worse than aluminum for:

  • Cost

A metal with a golden appearance, brass is a highly machinable metal available at a slightly higher price point than aluminum. It is commonly seen on parts such as valves and nozzles, as well as structural components, while its high machinability makes it suitable for high-volume orders.


Better than aluminum for:

  • Electrical conductivity

Worse than aluminum for:

  • Machinability

Copper shares several material properties with aluminum. However, the superior electrical conductivity of copper can make it preferable for various electrical applications. While pure copper is difficult to machine, many copper alloys offer similar machinability to popular aluminum grades.

Question & Answers for Aluminum CNC Machining

Plastic: ABS, PC, ABS+PC, PP, PS, POM, PMMA (Acrylic), PAGF30, PCGF30, Teflon, DHPE, HDPE, PPS, PEEK. 

Metal: Aluminum, Steel, Stainless Steel (17-4, Inconel 625 & 718), Magnesium, Titanium, Zinc, Brass, Bronze, Copper. 

These are the most common materials for CNC prototyping and production parts. Besides that, we can work with any type of machinable plastic and metal we can purchase from the stock market. 

What’s more: We are able to create a custom plastic block or bar for the material such as PA GF50, PPS GF50. To discover further plastic materials we can do, please contact our team.

CNC machining starts with a computer, on which designers prepare a part using CAD (Computer-aided Design) software. This digital part is then converted into a format that can be recognized by a CNC machine.

Instructions are sent to the CNC machine in the form of  “G-Code” after which the machine can start cutting.

Most CNC machines have a “worktable” and work holding device to keep a block of material — known as the “workpiece” — in place. The worktable may or may not move, depending on the style of the machine.

When machining starts, the cutting tool makes contact with the workpiece, cutting away layers of material. The tool and/or workpiece is moved and/or rapidly rotated according to the G-Code instructions so that cuts are made in exactly the right places until the part is finished.

CNC machining is a fast, accurate and versatile solution for making end-use plastic and metal parts in any quantity, without the need for investing in hard tooling or expensive set-ups. No matter how simple or complex the parts.

Color: Pantone Number

Logo: AI


Sample lead time: 7days

Tooling lead time: 35 days

Production lead time: 7~30days

Usually we book the shipment with your appointed forwarder, or can ship to your warehouse with our shipment company

We also working with DHL/FEDEX/UPS for  long term relationship to have competitive express shipment with fast delivery.

As-Machined: The most popular and cost efficient way for inner functional components. Fine and even tool path is also good for aspect parts.

Bead Blasted: The part is left with a matt appearance. Range of 120 to 320 beads allows us to create different roughness to the surface.

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

Powder Coat: 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.

CNC machines include CNC mills, CNC turning machines (or lathes), CNC routers, and Electrical Discharge Machining (EDM) machines.

CNC mills have rotating cutting tools that are moved to different areas of the workpiece to make cuts and can be used to make many different pats. CNC lathes work the other way, rotating the workpiece against a stationary cutting tool, and are used to make cylindrical parts.

CNC routers are similar to CNC mills, but have less power and cannot cut the hardest materials. They can, however, be faster than CNC mills.

EDM uses electrical discharges (sparks) instead of a sharp cutting tool to cut material. No physical contact is made between the tool and the workpiece.

CNC machines are often defined by their number of axes. More axes mean they can move their tool and/or workpiece in a greater number of ways, giving greater cutting flexibility and the ability to make more complex parts in a shorter time.

3Q Machining is known as one of the best CNC machining companies in China in terms of quality, speed, and customer service. With high-quality CNC machines, we can easily achieve +/- 0.02mm of tolerance and can even get within +/- 0.01mm. But keep in mind that it can have an impact on the cost.

MOQ: From 1 piece to ~3000pcs each color each part

Sample payment: 100%

Tooling payment:50% deposit, 50% balance after sample approval

Product order payment: T/T 30% deposit, 70% after pre-shipment inspection

It’s no problem to arrange third party inspection before shipment, please book the inspection date 7 days in advance

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