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How to Build Your Own Copper Tube Bending Machine: A Comprehensive Guide

Whether you're a DIY enthusiast or a professional plumber, having a copper tube bending machine can make your work much easier and efficient. In this comprehensive guide, we'll walk you through the steps to build your own copper tube bending machine, ensuring that you have the right tools and materials for the job. With a little bit of time, patience, and effort, you'll have a reliable and cost-effective machine that can bend copper tubes with ease.

Materials and Tools Needed

Before we dive into the building process, let's gather all the necessary materials and tools. Here's what you'll need:

1. Steel frame (for the base and support)

2. Steel rollers (3-4, depending on the desired bending radius)

3. Steel shafts (for the rollers)

4. Bearings (to support the shafts)

5. Steel handle (for manual operation)

6. Electric motor (optional, for automated operation)

7. Adjustable wrench

8. Allen wrench set

9. Hammer

10. Metal saw

11. Drill and drill bits

12. Welding machine

13. Safety gear (gloves, goggles, and ear protection)

Step 1: Design and Plan

Before you start building, it's essential to plan and design your copper tube bending machine. Consider the size and type of copper tubes you'll be working with, as this will determine the size of the machine and the required bending radius. Sketch out a rough design, including measurements, and make a list of the materials and tools you'll need.

Step 2: Build the Frame

Start by building a sturdy steel frame for your machine. This will provide a solid base and support for the rollers and other components. Use a metal saw to cut the steel to the desired size and shape, and then weld the pieces together. Make sure the frame is level and sturdy before moving on to the next step.

Step 3: Attach the Rollers

Next, you'll need to attach the steel rollers to the frame. These rollers will be responsible for bending the copper tube, so it's crucial to position them correctly. Drill holes in the frame where the shafts will be inserted, and then slide the shafts through the holes. Attach the bearings to the frame to support the shafts, and then slide the rollers onto the shafts.

Make sure the rollers are spaced correctly, with enough room for the copper tube to pass through. The distance between the rollers will depend on the desired bending radius, so consult your design plans to ensure proper placement.

Step 4: Attach the Handle or Motor

Now it's time to decide whether you want a manual or automated copper tube bending machine. If you prefer a manual machine, attach a steel handle to one of the roller shafts. This will allow you to turn the rollers and bend the copper tube by hand.

If you'd like an automated machine, you'll need to attach an electric motor to one of the roller shafts. Make sure the motor is powerful enough to turn the rollers and bend the copper tube. You may also want to add a speed control feature to the motor, allowing you to adjust the bending speed as needed.

Step 5: Test and Adjust

With the machine fully assembled, it's time to test it out. Insert a copper tube between the rollers and turn the handle or activate the motor. Observe how the tube bends and make any necessary adjustments to the roller spacing or motor speed. You may need to experiment with different settings to achieve the desired bending radius and smoothness.

Step 6: Safety Precautions

Finally, make sure to follow proper safety precautions when using your copper tube bending machine. Always wear gloves, goggles, and ear protection when operating the machine, and keep your hands and other body parts clear of the rollers and moving parts.


Building your own copper tube bending machine can be a rewarding and cost-effective project. With the right tools, materials, and a bit of patience, you'll have a reliable and versatile machine that can make your work with copper tubes much more efficient. Follow this comprehensive guide to ensure a successful build, and enjoy the satisfaction of creating a useful tool with your own hands.

CNC Copper Machining

CNC Machining Copper Material is good electrical conductivity, thermal conductivity, it is soft and good for machining as it has high plasticity, it is easily and rapidly to carry out desired shape as machining cutter can run faster than other steel materials, and also reach high precision.

Copper has a shiny reddish-orange finish, which varies slightly based on the surface finish method. Copper can be media-blasted and polished to achieve many different cosmetic surface finishes.

CNC Machining Copper Parts are widely used in the manufacture of electrical wires, cables, electric brushes, electric spark, and other electrical devices and products.

CNC Copper Machining

Benefits of CNC Copper Machining

1/ CNC Machining Copper Parts are excellent in electricity conductivity, supporting very good electric function

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3/ Copper is easy for cutting and machining, its production efficiency is much higher than steel series

4/ Good propriety for bending and shaping

5/ Heat transferring function very good, high resistance, temperature stability, long durable using

6/ Stable surface, non-surface treatment is durable, electroplating is also used on copper parts

CNC Copper Machining

Composition And Property of CNC Machining Copper

Copper Property Alloy Type Content Melting Point Hardness Tensile Strength Density
Cu-based Zn, Sn, Si, Al, Ni 1083°C HB35-45 Low 8.9 g/cm3

Common Materials Code of CNC Machining Copper

Copper Alloy Workable Processes Surface Finishing for Copper Parts Materials Code
CNC Turning, CNC Milling, CNC Drilling, Molding, Forging, Fabrication, Welding, etc. Passivation, Anodizing, Plating, Chemical Polishing, etc. Copper 110
Copper 101
Copper 145
other more Copper Alloy

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From year of 2005, Asianstar Company establish the CNC Machining Factory in Guangdong Province, China.
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