5 Different Sheet Metal Bending Processes

Sheet metal bending has seen many changes over the years, but one thing has remained constant: it is only worth doing if you understand how to do it right. This article will explain how the sheet metal system has changed over the years and which techniques are best used for different scenarios.

Sheet metal bending is a complex topic. This article will introduce you to the topic, but we recommend that its readers do additional research to master it.

The Sheet Metal Bending Process

Metal bending is a process in which the shape of a piece of metal is changed. This change can be made with a piece of equipment, such as a press brake. The press brake applies force to the metal, causing it to curve without breaking.

Although this process seems simple, there are many aspects to consider in a metal bending operation. For example, there are several types of metal bending, all of which serve similar purposes but have different mechanisms for accomplishing them. The type you choose will depend on several factors about your particular project.

With that said, here are the different types of metal bending processes:

1. Air Bending

Air bending is similar to the V-bending method: it uses v-shaped punches and dies to bend sheets into various angles. However, unlike the conventional v-bending process, the punch in air bending leaves a gap (or air) behind the sheet rather than forcing it into the bottom of the V-shaped die. This allows for more control over the bend angle than is available with a conventional v-die.

2. V-Bending

The v-bending method is the most common sheet metal bending method because it forces a sheet metal workpiece into a v-shaped groove in a die, creating bent metals with different angles. For example, acute, obtuse, and right angles are fairly simple to create using the v-bending method.

3. Wipe Bending

The wipe bending method is a sheet metal fabrication technique in which the bent material rests against a wipe die. The sheet is held in place by a pressure pad connected to the punch. The punch applies pressure against the material that extends past the die until it bends over the wipe die. This gives you a mechanical advantage because it lets you create desired bends with just a little force. However, this method might not be ideal for creating obtuse bend angles because you would have to use a more complex piece of equipment capable of delivering horizontal force to your work.

4. Bottoming

Bottom bending is a type of v-bending used to solve the spring back issue. It helps deformation in the bend area by applying additional force through the punch tip after completion of the bend. Bottoming offers a precise bend angle but requires a high tonnage press.

5. Rotary Draw Bending

Rotary draw bending uses a rotating die to bend sheet metal. To use this method, a piece of sheet metal is clamped to the die, and then a rotating machine draws the piece around the die and forms a geometry with the desired bend radius. This method is often used for a drawing process that allows for high-quality bends.

Rotary draw bending offers several advantages over other methods. For example, it doesn’t scratch the material’s surface, unlike wipe bending and v-bending processes, which are also used to make round parts. In addition, rotary draw bending can make very tight bends in sharp corners.


When working with sheet metal, knowing how to make it bend without breaking is the key to success. If done incorrectly, you will have wasted your time and money. Therefore, you should take the time to review the information above and ensure that you make the right choice. 

CSM Fabrication and Welding provides the best metal fabrication and welding service and works with all steel types including but not limited to aluminium, steel, and stainless steel. We can form cones, square to rounds and provide you with other standard pressing requirements using our 80-tonne promecam brake press. We also offer onsite and workshop services. If you need sheet metal fabrication services in Perth, WA, we’ve got you covered! Get in touch with us today and let us know how we can help!

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