Sheet metal forming is a process used in many industries to make metal parts from thin metal sheets. It’s actually one of Xometry's most popular manufacturing methods. Our customers use the Xometry Instant Quoting Engine® to get automatic quotes on everything from simple brackets to aircraft parts and sheet metal assemblies. In this article, we’ll give you the lowdown on sheet metal forming, including the various processes, suitable materials, and its pros and cons.
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Also known as sheet metal fabrication, sheet metal forming uses metal sheets to make various products and components. The metal sheets are formed and cut into the necessary shape and size via many different processes and equipment, which we’ll cover a little further down. The material then goes through any necessary finishing steps, like surface treatment, deburring, or welding.
The reason for this process’s popularity is that sheet metal is both tough and malleable, making it easy to manufacture different parts that, despite being bendy and lightweight, are still strong and durable. It’s not limited to just food and drinks cans, however; almost anything can be made using sheet metal forming, including appliances, furniture, structural components, and HVAC systems. In fact, if you take a look around you right now, it's likely you'll come across some product that incorporates sheet metal into its design.
Depending on the type of metal used, the number of processing steps needed to achieve the final form, and the complexity of the design, steel metal forming is also relatively inexpensive compared to similar processes, like forging and metal stamping. Simple designs in standard sizes can be particularly cost-effective.
The relevant tools and equipment needed to form sheet metal will depend on what you want to make. For example, if you need specially shaped holes, cutting with punches and dies would be best. Shearing tools are also useful for cutting off small unwanted slithers in a straight line. Rollers are used to make cone or cylinder-shaped items, and to bend the metal you’ll need something like a press brake.
Let’s talk a little more about sheet metal forming’s various processes as each one is better-suited for making different items.
Before metal sheets get formed, many times the initial flat patterns are laser cut first. Laser cutting uses a high-powered laser to cut shapes into flat metal sheets. It’s one of the most precise methods and can make a plethora of shapes, patterns, and holes. To start laser cutting sheet metal, a blank sheet is attached to the cutter’s bed, and then the laser itself does all the hard work. The machine’s laser beam is controlled by a CNC (computer numerical control) system so that highly accurate and clean cuts can be made. The system can also pre-program different patterns and repeat them again and again.
There is very minimal post-processing needed with this method, and hardly any waste. It is commonly used in automotive, aerospace, and electronics. At Xometry we offer sheet cutting as a standalone service and offer many metals like steel, stainless steel, aluminum, and copper. A potential downside of this method is its high initial cost—the machinery is quite pricey. This is why many customers turn to Xometry for their laser cutting needs. Visit our sheet cutting services page to learn more about what we offer in this area.
One of the most commonly utilized sheet metal forming processes at Xometry is bending. Bending sheet metal requires the use of specialized but fairly simple bending tools, like press brakes. The sheet metal bending process is quick, accurate, and one of the most inexpensive. The process is used to (as the name suggests) make bends and curves on the metal sheet in a straight line. With press brakes, the metal is put or clamped into place and then bent to the required angle.
This sheet metal forming process is often used for vehicle body parts, enclosures, and electrical components. It can be performed on most compatible sheet metal forming materials, like stainless steel, brass, aluminum, and galvanized steel. It does have some limitations, however; the metal needs to have the same thickness throughout, and thicker materials will understandably be much harder to bend.
This process adds a hollow circular roll to the edge of the sheet metal it’s working on to smooth them out, improve safety when handling, and add strength. During curling, the sheets are fed into machines that slowly roll or bend the edges into smooth, rounded shapes. Some curled features require specialized tooling, and machinery might be required for complex shapes or tight rolls.
Depending on their thickness and how ductile they are, most metals can be put through the curling process, including steel, aluminum, and brass. The process is used in HVAC, appliance manufacturing, and architecture for edges on panels, trim, or housings.
Ironing is used to make sheet metal parts smoother and ensure they have an even thickness. This is done by pushing the part through one or more metal-shaping dies that press it, slowly making it thinner and longer without changing its shape too much.
It’s great for products that need the same thickness throughout, like soda cans, and ideal for bendy and stretchy metals like steel and aluminum. The method needs specialized tools and machinery and can’t be used for parts that need drastic shape changes.
This process uses high-pressure fluid to shape sheet metal and can also handle more complex shapes. The blank sheet is held in place over a die, which is in the shape of the final product. The sheet and hydraulic chamber are sealed off, and fluid is pumped directly into the chamber at high speed. As the hydraulic pressure builds up, the fluid presses the metal against the die, forcing it to conform to the shape of the die. It’s suitable for aluminum, stainless steel, brass, and other ductile metals and is commonly used in automotive, medical, and aerospace.
Hydroforming can create shapes with even thickness and very little waste. It’s also one of the more affordable sheet metal forming methods for creating complex pieces in high quantities. Hydroforming equipment, though, is expensive to buy and the forming dies can require a higher upfront investment.
For intricate and hollow cylindrical shapes like cooking pots, beverage cans, and car door panels, many manufacturers turn to deep drawing. The process involves the sheet metal being placed over a die, then pressed with a punch into an open cavity, causing the material to undergo plastic deformation. The process allows for precisely made complex shapes and designs with deeper features.
Materials common in deep drawing include malleable metals like aluminum, copper, brass, and stainless steel. Minimal manual labor is needed with this method, and it’s cost-effective for high-volume production.
Shearing is used to cut sheet metal along a straight line, which is helpful when either cutting the material into smaller pieces or trimming its edges. A shearing machine has two blades that slide past each other, like giant scissors, to cut the metal. A sheet has to be placed on the machine, clamped into place, and then its upper blade is lowered onto the material to make the cut. This is one of the most widely used processes for sheet metal forming, mainly because it’s convenient, quick, produces minimal waste, and reduces costs when making high volumes.
The manufacturing, construction, and auto industries all use it for shearable materials, like steel, aluminum, and stainless steel. The process does sometimes cause the edges to deform or burr, especially when working with thicker materials which some shearing machines might particularly struggle with. For more complex shapes, you’ll have to add in an additional forming process, as this one only does straight-line cuts.
Just like your average paper hole punch, this sheet metal forming method makes holes, slots, or specific shapes by punching the unwanted material out. The metal sheet is held in place against a die, which is in the shape of the final cut-out. A punch is driven down into the sheet metal, pushing it into the die, which shears off the material precisely along the edges of the die, producing the completed cut-out in the material. This automated process is quick, efficient, and ideal for high-volume production of enclosures, brackets, panels, and many other products.
While it can be used with various different metals, some machines might not be able to punch through thicker materials. The more advanced and capable machines are pricey, and you’ll still have to do a bit of post-processing, especially for more complex designs.
There are mainly six sheet metal materials that are used in manufacturing and suitable for sheet metal forming. At Xometry, we offer instant quoting on sheet metal forming for these materials and more.
Stainless steel: This material is super strong, has good malleability, and is corrosion resistant, making it very common in medical, and food and beverage.
Aluminum: Another option with excellent corrosion resistance and malleability is aluminum. This lightweight metal also has thermal and electrical conductivity, and an impressive strength-to-weight ratio. It’s used in everything from household and industrial appliances, aerospace components, and power lines.
Hot-rolled steel: Used in construction and for things like automotive chassis and railroad tracks, hot-rolled steel is a cost-effective material that’s fairly easy to form, although it’s not designed for parts that need extreme precision.
Cold-rolled steel: There are a few more steps to forming this material than hot-rolled steel but this just makes it stronger. It’s used in home appliances, structural components, and aerospace parts.
Galvanized steel: This is a durable and affordable metal with good corrosion resistance. It’s often used in roofing, air conditioning, refrigeration, and industrial machinery.
Copper: This extremely malleable material has good electrical and thermal conductivity which is why it’s so often found in electrical applications.
We often form sheet materials 0.6mm to 6.35mm thick, but depending on the design and the type of metal, we can support other gauges.
Despite the multitude of different processes available, many industries time and time again turn to sheet metal forming for their manufacturing needs. This versatile method is less expensive than some other manufacturing methods, like casting or forging. The process is flexible, allowing for many different designs and applications.
As the metal sheets used are typically very thin, the parts are lightweight with great strength-to-weight ratio. Sheet metal forming offers malleability, precision (both in the forming processes and parts created), and can be formed with lots of different metals, such as the ones we've outlined in the section above. The created parts are strong, durable, weather-resistant, high load-bearing, and long-lasting. Another reason companies love sheet metal forming is because they’re able to produce items in small batches—ideal for rapid prototyping.
Sheet metal forming plays a crucial role in creating everything from airplane panels to casings. This process transforms flat metal sheets into precise, durable, and lightweight components. At Eagle Metalcraft, our commitment to innovation and craftsmanship drives us to deliver outstanding results in every project.
Sheet metal forming isn’t just about machinery—it’s about understanding material behavior, design intent, and production needs. We blend traditional methods with cutting-edge technologies to deliver accurate parts quickly. With over 70 years of experience, our team excels in producing components that meet the tightest tolerances.
Industries like aerospace, defense, electronics, and medical devices rely heavily on this forming process. It’s a cost-effective way to create parts with consistent quality and minimal waste. This guide will walk you through everything you need to know about sheet metal forming, from methods and materials to trends and challenges.
Sheet metal forming involves reshaping thin metal sheets using force, without removing material. This process creates parts that are strong, dimensionally stable, and produced at high volumes. It is a core manufacturing method that relies on controlled deformation, allowing the metal to be molded into specific shapes while retaining its structural properties.
Typical metals used include stainless steel, aluminum, titanium, and copper due to their excellent formability and performance under stress. Thickness usually ranges from 0.5 mm to 6 mm, making this process ideal for producing brackets, panels, housings, and enclosures with structural integrity. It’s a technique favored for its repeatability and cost-efficiency, particularly in high-volume production environments.
For engineers and designers seeking a deeper understanding, the SME Manufacturing Processes and Systems handbook provides a comprehensive breakdown of the underlying mechanics and best practices associated with this technique. Mastery of sheet metal forming opens the door to creating components with advanced geometries and exceptional durability.
Sheet metal forming is more than just bending or cutting metal. It’s a strategic process that blends deep knowledge of material behavior, design engineering, and production systems. It enables manufacturers to produce components that are strong, lightweight, and dimensionally consistent.
This is especially valuable in industries where tolerances are tight and performance is non-negotiable. Companies rely on this process not only to create parts but also to maintain sustainability goals by minimizing material waste and energy use.
From the aerospace industry to telecommunications, companies rely on this process to build components with consistency, speed, and minimal material waste. Forming processes also reduce the need for secondary machining operations, further streamlining production. By leveraging these benefits, manufacturers can enhance throughput, lower costs, and achieve greater design versatility.
At Eagle Metalcraft, we utilize a blend of traditional and advanced forming techniques. Each approach is chosen based on project specifications, material type, and desired output. Our ability to integrate multiple techniques into a single workflow ensures seamless production from start to finish, maintaining tight tolerances and consistent quality.
Before forming begins, flat sheets are precisely cut using fiber lasers like the LVD PUMA , enabling clean, accurate pre-forms and minimizing waste. Laser cutting provides a foundational starting point for any forming operation, ensuring that the dimensions are exact before bending or shaping begins. This technology excels in both prototyping and full-scale production due to its speed, precision, and ability to handle a wide variety of metals.
Computer-controlled press brakes deliver precision bends with consistent repeatability. This is crucial for producing complex brackets and assemblies with exact tolerances. CNC brake forming allows for the automation of the bending process, reducing human error and increasing repeatability. It supports a wide range of bend angles and configurations, making it indispensable for custom component fabrication.
Deep drawing forms seamless, hollow structures like casings or containers by pulling metal into a die. It’s ideal for applications in aerospace and medical manufacturing. The process allows for the creation of complex, contoured parts without seams or welds, which enhances strength and appearance. Deep drawing requires careful planning and high-quality tooling to avoid tearing or wrinkling of the material.
Stretch forming creates contoured surfaces by elongating the sheet across a die, a method often used in aerospace and automotive applications. Roll forming, on the other hand, produces continuous shapes via progressive rolling stages—ideal for long, uniform profiles such as rails, supports, and channels. Both methods are suited to projects requiring smooth curves and consistent cross-sections, and they complement other forming processes in the workflow.
Post-forming, components are often assembled using various joining techniques including spot welding, seam welding, and riveting. These methods ensure structural integrity and long-term reliability. At Eagle Metalcraft, our in-house welding capabilities include both manual and robotic systems, enabling us to complete complex assemblies with a high degree of consistency and quality control.
Top-tier forming requires state-of-the-art tools. Eagle Metalcraft uses a full suite of advanced equipment, including CNC press brakes, servo-electric benders, fiber laser cutters, robotic welders, and precision dies, jigs, and fixtures. Our production floor is designed for versatility and scale, allowing us to switch between prototyping and high-volume runs with ease.
We also leverage Industry 4.0-ready systems for lights-out manufacturing, data tracking, and predictive maintenance. This level of integration not only enhances productivity but also reduces downtime and improves part traceability. These investments in technology ensure that we remain at the forefront of precision metal fabrication.
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Our CNC press brakes deliver highly accurate and repeatable bends across a wide range of materials and thicknesses. These computer-controlled machines allow us to maintain tight tolerances, reduce setup time, and automate complex bend sequences. They’re essential for producing precision components in sectors such as aerospace, medical, and defense.
Servo-electric benders offer energy-efficient, clean, and highly controllable forming. Unlike traditional hydraulic systems, servo-driven units provide faster cycle times, quieter operation, and precise angle control. These systems are ideal for lightweight materials and intricate designs that demand consistency and minimal material distortion.
Our fiber lasers—such as the LVD PUMA —cut with extreme precision and speed, delivering clean edges with minimal waste. These machines handle a broad spectrum of metals and thicknesses, making them suitable for both prototyping and production. Integrated with automation, they allow for continuous cutting with minimal operator intervention.
We utilize robotic systems to perform high-precision welding and efficient material handling. These robots ensure consistent weld quality, reduce the chance of human error, and improve workplace safety. They also support faster throughput and make it easier to scale up for larger production volumes without sacrificing accuracy.
Custom-engineered dies and fixtures ensure each part is formed, held, and assembled to spec. These tools are critical in maintaining quality across repeated operations, reducing variability, and supporting complex assemblies. Our in-house tooling capabilities give us complete control over the forming process from start to finish.
Sheet metal forming offers a wide range of benefits that make it an essential process in modern manufacturing. Its ability to produce strong, lightweight, and highly precise components gives manufacturers a competitive edge in industries. By combining advanced equipment, material efficiency, and flexible production capabilities, sheet metal forming supports everything from rapid prototyping to full-scale production with consistent quality and cost control.
Sheet metal forming enables the production of components with extremely tight tolerances. Automated systems and well-maintained tooling ensure that every part meets exact specifications. This level of accuracy is especially important in industries like aerospace and defense.
Because forming reshapes metal instead of removing it, there is significantly less waste compared to subtractive methods like machining. This efficiency leads to lower material costs and supports environmentally responsible manufacturing practices.
Whether you need a small batch or a high-volume run, sheet metal forming scales efficiently. Modern forming systems can quickly switch between jobs, making them ideal for both prototyping and full-scale production.
Forming supports a wide range of part geometries, from simple bends to complex curves. This flexibility allows engineers to design innovative components that meet performance, weight, and space constraints.
Forming processes typically require fewer secondary operations, allowing products to move through the production line faster. This speeds up delivery timelines and helps manufacturers meet tight deadlines without sacrificing quality.
Despite its many advantages, sheet metal forming is not without its challenges. Manufacturers must navigate a range of technical and material limitations to ensure parts are produced accurately, efficiently, and without defects. From the physical behavior of metals during deformation to the wear and tear on tooling over time, these issues require careful planning, expert knowledge, and continuous process optimization. Understanding these challenges is key to achieving consistent quality and maximizing the benefits of this essential manufacturing method.
One of the primary limitations in sheet metal forming is the thickness of the material that can be effectively formed. Most forming techniques are optimized for sheets up to about 6 mm thick. When material exceeds this threshold, it becomes increasingly difficult to deform without introducing defects or causing excessive wear on the tooling. Thick materials are more resistant to bending and stretching, which can lead to cracking or incomplete formation.
In such cases, alternative processes like machining, casting, or forging may be required, often at a higher cost and with a more complex setup. Engineers must carefully assess part requirements and choose the right method based on thickness to ensure structural integrity and manufacturability.
Another significant challenge lies in predicting and managing how different metals will behave during the forming process. Metals like titanium, hardened steels, or certain alloys can be difficult to work with due to their brittleness or high springback tendencies. These materials may crack, warp, or become distorted if not formed under the right conditions. Successful forming requires a thorough understanding of material properties, including yield strength, ductility, and elongation.
Heat treatments, lubrication, and specific tooling geometries are often needed to prevent issues during forming. Misjudging any of these variables can result in costly rework, scrapped parts, and production delays.
Sheet metal techniques are widely used across industries that demand strong, lightweight, and precisely formed components.
Springback is a common and often frustrating phenomenon in sheet metal forming. After being bent or stretched, the metal tends to return partially to its original shape, which can lead to deviations from the intended geometry.
This is especially problematic in applications where precision is critical, such as aerospace, medical devices, and telecommunications. Engineers must anticipate the degree of springback and account for it in tooling design and machine programming.
This often involves compensating for the bend angles or using over-bending techniques, but the process can be trial-and-error. Achieving consistent results requires experience, refined methods, and sometimes iterative testing to fine-tune each setup.
The durability of forming tools plays a major role in the quality and efficiency of the process. Over time, dies, punches, and press brakes are subject to wear and deformation, especially when working with abrasive or high-strength materials. Worn tooling can lead to inconsistent part dimensions, increased scrap rates, and even equipment damage. Regular maintenance and inspection routines are essential to keeping the operation running smoothly.
However, these preventive measures require downtime, labor, and cost—all of which must be factored into production planning. Advanced coatings and tool materials can extend tool life but often come with higher upfront investment, requiring a balance between cost and performance.
Not all shapes or features are feasible through sheet metal forming alone. Complex geometries, tight radii, or intricate cutouts may exceed the forming limits of a material or require secondary operations such as machining or welding. Designers need to be aware of these constraints early in the product development phase to avoid creating parts that are difficult or impossible to manufacture efficiently.
Collaboration between design engineers and manufacturing teams is critical to ensuring that the final product can be produced reliably without costly redesigns or process modifications. Design for manufacturability (DFM) principles are essential for navigating this challenge and achieving both functional and production goals.
Sheet metal forming is a foundational process across a wide spectrum of industries, valued for its versatility, precision, and cost-effectiveness. The ability to produce strong, lightweight, and dimensionally consistent components makes it an essential technique in sectors where performance, durability, and quality are paramount. From mission-critical aerospace parts to precision electronics housings, the industries that rely on metal forming span both legacy and emerging markets, each with unique demands and applications.
In the aerospace industry, sheet metal forming is indispensable for manufacturing structural and aerodynamic components. Formed parts such as fuselage panels, engine brackets, bulkheads, and mounting frames must meet exceptionally tight tolerances while maintaining low weight and high strength.
These requirements make forming techniques like stretch forming and deep drawing particularly valuable. Aerospace manufacturers depend on the repeatability and scalability of metal forming to meet safety standards and comply with rigorous certification protocols. Companies like Eagle Metalcraft provide components that perform reliably under the extreme conditions of flight, contributing to both commercial and defense aviation programs.
Precision and hygiene are critical in the medical industry, where sheet metal forming is used to create surgical trays, instrument enclosures, and diagnostic equipment housings. Stainless steel, a commonly used material, is ideal for these applications due to its corrosion resistance and ease of sterilization. Deep drawing and CNC brake forming allow for the creation of seamless, easy-to-clean components with consistent dimensions.
These characteristics are vital for maintaining sterility in operating rooms and laboratory environments. With the healthcare industry’s growing reliance on technology and compact devices, formed metal parts support innovation in medical device design and manufacturing.
Durability and reliability are top priorities in defense applications, and sheet metal forming delivers on both fronts. The military sector utilizes formed metal for armored vehicle parts, ruggedized communication housings, weapon system enclosures, and more.
These components must withstand harsh environments, impact, and wear, often under combat conditions. Eagle Metalcraft’s experience in defense manufacturing ensures that each part meets stringent military specifications and compliance requirements. The forming process also supports high-volume production runs needed for fleet maintenance, as well as custom fabrications for mission-specific needs.
From server enclosures to device casings, sheet metal forming plays a key role in electronics and telecom manufacturing. These industries demand parts that are lightweight, durable, and precisely formed to fit intricate components and assemblies.
Processes such as CNC brake forming and laser cutting allow for the efficient production of complex shapes and mounting features. Formed metal also provides essential shielding against electromagnetic interference (EMI), ensuring device performance and signal integrity. As technology continues to shrink and become more powerful, precision metal forming remains a cornerstone in housing and protecting delicate electronic systems.
Beyond specialized sectors, sheet metal forming is widely used in the production of machinery, HVAC systems, vending equipment, enclosures, and platforms. These applications benefit from the scalability and structural reliability of formed parts, particularly when components must support heavy loads.
Roll forming and brake forming are commonly used to create support structures, brackets, and mounting systems that integrate seamlessly into larger equipment builds. The ability to produce custom components at scale helps manufacturers maintain supply chain efficiency and meet evolving customer needs.
Sheet metal forming continues to prove its value across these and many other industries, enabling innovation, reducing costs, and supporting high-quality manufacturing outcomes.
As manufacturing technology continues to evolve, the sheet metal forming industry is experiencing a wave of innovation aimed at improving efficiency, precision, and sustainability. These advancements reshape how components are designed, fabricated, and delivered—empowering manufacturers to meet higher performance demands while staying competitive in fast-moving markets. From digital integration to new material capabilities, the latest trends are driving a smarter, more responsive future for metal forming.
One of the most transformative developments in sheet metal forming is the integration of smart manufacturing systems. By connecting forming equipment to centralized data platforms via the Internet of Things (IoT), manufacturers can now monitor machine performance, track part quality in real time, and predict maintenance needs before breakdowns occur. These systems provide data-driven insights that help reduce waste, optimize cycle times, and improve overall process reliability.
For companies like Eagle Metalcraft, adopting Industry 4.0-ready technologies allows for lights-out manufacturing, improved traceability, and rapid response to shifting production demands.
Automation is becoming more prevalent across forming operations, especially in tasks like material handling, welding, bending, and inspection. Robotic systems offer a level of consistency and repeatability that’s difficult to achieve manually, reducing errors and minimizing downtime.
By integrating robots with CNC-controlled forming equipment, manufacturers can automate entire workflows, increase throughput, and enhance workplace safety. Eagle Metalcraft leverages robotic welding and other automation tools to streamline production, ensure consistent quality, and meet tight delivery timelines, particularly for high-mix, low-volume orders.
The materials used in sheet metal forming are also evolving. High-strength aluminum alloys, duplex stainless steels, and corrosion-resistant materials are gaining popularity across industries due to their superior performance characteristics. These advanced metals allow for lighter, stronger, and more durable parts, which are essential for sectors like aerospace, medical, and automotive manufacturing.
However, they often require specialized tooling and carefully calibrated forming techniques. Manufacturers must adapt their processes and invest in new equipment to accommodate the forming of these challenging materials while still maintaining part integrity and finish quality.
Environmental responsibility is driving innovation in how sheet metal forming processes are designed and executed. New forming technologies and machine designs are placing a stronger emphasis on energy efficiency, reduced scrap generation, and minimal resource consumption. Manufacturers are also optimizing part layouts during cutting and forming to reduce material waste and implementing recycling programs for leftover scrap.
These efforts not only contribute to more sustainable operations but also reduce production costs and align with growing regulatory and customer expectations around environmental impact.
Design validation and process optimization are now being enhanced through digital twin and forming simulation technologies. These tools allow engineers to virtually test how a sheet metal part will behave under specific forming conditions. This reduces the need for prototyping, shortens development timelines, and improves first-pass success rates. By simulating factors like springback, stress distribution, and thinning, manufacturers can make informed adjustments to tooling and machine settings to ensure precision results on the shop floor.
As these trends continue to mature, sheet metal forming will become even more agile, sustainable, and capable of producing increasingly complex parts. Forward-thinking manufacturers that embrace these innovations are positioning themselves to lead in both quality and efficiency in the years to come.
Sheet metal forming continues to be one of the most efficient and scalable ways to manufacture custom metal parts. With advanced tools, experienced teams, and Industry 4.0 integration, manufacturers can produce highly accurate components faster and more cost-effectively than ever before.
At Eagle Metalcraft, we bring over 70 years of experience and cutting-edge technology to every project. From prototype to production, we deliver quality, speed, and engineering expertise you can rely on.