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Essential Guide to Custom Sheet Metal Fabrication

Discover the essential factors in choosing a sheet metal fabrication service, from project type and budget to timeline. Learn about the various processes involved in sheet metal fabrication, including cutting, deformation, and assembling. Explore the benefits and limitations of sheet metal fabrication, common applications, and tips for selecting a suitable supplier. This guide provides a detailed overview to help you make informed decisions for your custom sheet metal projects.

Choosing a Sheet Metal Fabrication Service: Key Factors

When choosing a sheet metal fabrication service, there are three primary factors to consider: the type of project, the budget, and the timeline.
1. Type of Project
The type of project you are working on is the first factor to consider. Some projects may require more specialized services than others.
  • Simple Projects: For straightforward tasks, a general service may suffice.
  • Complex Projects: For intricate tasks, choose a service with the necessary experience and expertise.
  • Past Records: Review the service’s past projects to gauge their capability.
  • Certifications: Opt for a service with relevant certifications to ensure high-quality work.
2. Budget
Your budget is the second critical factor. It’s essential to find a service that can deliver quality results within your financial constraints. Strategies:
  • Obtain Quotes: Get estimates from multiple services and compare prices.
  • Look for Discounts: Seek out any available discounts or specials.
  • Negotiate: Don’t hesitate to negotiate the provided quotes to better fit your budget.
3. Timeline
The timeline for your project is the third crucial factor. Ensure that the service can complete the project within your desired timeframe to avoid unnecessary delays. Steps:
  • Detailed Estimate: Request a detailed estimate before beginning the project to understand the expected duration.
  • Progress Monitoring: Ask for a timeline once the project is underway to monitor its progress and ensure it stays on track.
  • Ratings and Reviews: Check local listings and client reviews, focusing on negative reviews to understand potential issues with on-time delivery.
By carefully considering these factors, you can select a sheet metal fabrication service that meets your project’s specific requirements.

HDC Sheet Metal Fabrication Service

HDC Sheet metal fabrication service provides us gives your product a smart and good look ensuring more advantages technically from your products. Moreover, our metal fabrication is cost-effective and durable and reduces the manufacturing cost in mass production. We even use perfect metal for the specific product according to the K-factor and necessary ratios.

Benefits OF HDC Sheet Metal Fabrication Service

  • As we maintain standard tolerance levels tightly, your specific design is formed perfectly according to your need.
  • Equipped with advanced manufacturing machines, We keep the quality in the high lever consistently
  • Various finishing goes through all the way of painting, polishing, powder coating, and sandblasting which gives it a better look.
  • For the best outputs on your designs, we can give you directions with our own designers who can help you with your specific products.

Besides sheet metal fabrication service, we also offer CNC Machining SeviceCNC Turning Service, CNC Milling Service to get your customized parts made.

We offer a flexible shipping service so that you can import your metal products safely to your address within your budget. You can pick any shipping method, and we will support you to get your products securely. We provide specific documentation to the freight forwarder company on how to handle your products to avoid any damage.

You are always welcome to our factory. We have a world-class sales team to assist you. You can bring your design with you, and our engineers will help you with further procedures.

We provide your quote within 24 hours. Ask for a quote, and our team will contact you shortly.

What Is Sheet Metal Fabrication? 

Sheet metal fabrication is the process of transforming sheet metal into any kind of product or part of a product. 

CNC Sheet Metal Fabrication Turns Metal Sheets Into Products

It can be an aluminum sheet or steel sheets as well as zinc or copper. The fabrication process goes through some steps till finally finishing the products. You can cut, bend, do welding or press cut the sheet to give it the form you need in sheet metal fabrication.

What Are The Processes Of Sheet Metal Fabrication?

Sheet metal fabrication can be done in three ways. All the parts are necessary to complete sheet metal fabrication. The three ways you can manipulate sheet metal can be –

  • Cutting
  • Deformation
  • Assembling

Let’s look into the sheet manipulation ways to a bit depth:


Cutting is the first step for sheet metal fabrication. It should be as smooth as possible so that the finishing can come out aesthetic. Let’s look into three different types of cutting for fabrication –

Plasma Cutting Uses Ionized Gas

1. Plasma cutting

Plasma cutting is the way of using pressurized ionized gas to cut metal. The gas creates a hot plasma channel that can easily cut through even the thick metal sheets while necessary.

Water Jet Cutting Uses Pressurized Water

2. Water jet cutting

It is the way to cut through a metal sheet with the help of water. You can see water being used mixed with some abrasive substance and turned into a pressurized jet. As it does not produce heat, it is easy to use for low melting point metals.

Laser Cutting Uses Intensified Laser

3. Laser cutting

Laser, being intensified with a complex combination of mirrors, is used in this kind of metal cutting procedure. This one is accurate but you should use it only for thin or medium gauge sheets.

4. Punching

Punching is a process solely meant for metal fabrication. It can use punching, i.e. putting the metal sheet between punch and die for pressing and blanking, which is to remove the part being punched.


After cutting, the metal fabrication needs deformation. It can be done by bending or stamping.

Bending Is Important In Making Various Products

1. Bending

Bending the sheet requires a machine called brake. You can either turn the sheet according to the angle you need or make a bent sheet plain with this machine.

2. Stamping

Stamping itself is a set of procedures to deform the metal sheet. Like punching, it uses hydraulic pressing or any type of mechanical pressing with a tool and die. But punching needs the punched part to be removed when stamping does not need it.

Metal Spinning Looks Like Pottery Sometimes

3. Spinning 

In spinning, bent sheet metal is rotated while pressing against a tool. A lathe machine is used to do this.


Assembling is instead an optional way to join the sheet metal fabrication. You can either use fasteners or welding to do that.

1. Fasteners, Fastener screws, and bolts are used sometimes to join different parts of metal fabrication.

2. Welding, Welding is the way to join two metal parts by melting and turning two parts into one.

What Are The Benefits Of Sheet Metal Fabrication? 

Sheet metal fabrication is a process to transform metal sheets into usable objects. The process is very popular in the concerned industries nowadays. Let’s look into the benefits you may get with sheet metal fabrication:

  • As sheet metal is malleable, that is you can cut, bend or form it easily, it is very easy to work and give it any form you like.
  • The thickness to weight ratio of sheet metal is perfect to give any specific shape for any specific product you want.
  • The cost is relatively lower for sheet metal forming than other kinds of metal forming.
  • Not only this, you can easily repair sheet metal formation easily which makes it very useful in many kinds of specific products.
  • Because of the use of high-quality cutting machines like laser and jet water machines, CNC machining, auto lathe machines, the lead time is faster and the tolerance level is tighter.

What Are The Limitations Of Sheet Metal Fabrication?

Sheet metal fabrication can help you in many ways to build up your necessary product or parts of the product for assembly. But sheet metal fabrication has some limitations too:
  • Because of the K-factor, not all types of sheets can be used in all types of products.
  • As the finishing process of metal fabrication may go through painting, polishing, etc processes, it may take longer than other sheet forming techniques.
  • If you want to create parts that are too complex and drawn deep then you may not be able to do it if you use sheet metal fabrication.
  • Because metal fabrication is labor-intensive, you may find per piece expense is a little high.

The Common Applications Of  Sheet Metal Fabrication

Sheet metal fabrication is very popular among many industries nowadays. Different types of sheet metal fabrications are used in different industries. You can find it in home appliances, construction as well as in automobiles.

The Tolerance Of CNC Sheet Metal Fabrication

Tolerance is the acceptable variance in the design and the output in sheet metal fabrication.

Different parts of sheet metal fabrication have different standards for tolerance. 

That’s why it is very important to know the tolerance levels before designing:

ParticularsIn MillimeterIn Inches
Hole sizes+/-.0762+/-.003
Hole to edge+/-.254+/-.010
Hole to bend+/-.381+/-.015
Hole to hole+/-.127+/-.005
Bend to bend+/-.381+/-.015

These are the basic standards for common sheet metal fabrication parts. 

How To Design For CNC Sheet Metal Fabrication? 

Tolerance is a primary consideration when designing any part or entire product using CNC sheet metal fabrication. Here are the essential points to consider during the design process:

1. Thickness of the Item’s Wall
  • Consider the thickness of the metal sheets as they vary and may not work the same for every product.
2. Standard Tolerances
  • Use standard tolerances for different parts of the product. CNC machining tolerances are generally tighter than those for usual sheet metal fabrication.

You Should Measure A Metal Sheet For Correct Thickness

3. Adding Fillets
  • Add fillets to corners to make them less sharp and prevent cuts. This is particularly useful for laser cutting.
4. Kerf
  • The amount of Kerf produced differs in laser cutting, water jet cutting, and plasma cutting. Distribute the Kerf between the wastage and the product during design.

Fillet Designs Should Be Effective

5. Hole Design
  • Hole diameter must be larger than the sheet thickness.
  • Hole-to-hole distance should be at least twice the sheet thickness.
  • Holes near the edge should also follow the rule of being at least twice the thickness of the sheet for sustainability.
6. Bending
  • Interior bends should not be less than the metal thickness.
  • Design bend heights to be at least twice the sheet thickness.
  • Use bend reliefs to avoid metal deformation.

Understanding K-Factor

7. K-Factor
  • Consider the K-factor to avoid metal deforming. The K-factor is calculated as:

          K-factor = t / Mt or K-factor = (Neutral Axis Shift) / (Metal Thickness)

  • This calculation should be done beforehand. The K-factor varies with metal type and thickness and determines how much the material stretches during bending.

By considering these factors, you can ensure a more accurate and reliable design for CNC sheet metal fabrication.


Common Materials Used In Sheet Metal Fabrication

Materials used in sheet metal fabrication can differ from time to time. Following are some common materials used in sheet metal fabrication – Different Sheet Metals Have Different Colors

How To Choose A Suitable Sheet Metal Fabrication Supplier?

A good sheet metal fabrication company is the one that has the best types of machinery as well as good experience in this field. You can choose a suitable metal fabrication supplier if you consider the following five dimensions:

Think About Carrying Facilities

This point is associated with the main cost of production. Not all companies can provide good shipping facilities even if they can produce good products. You should find a good company which has experience shipping metal sheet goods carefully to the receiver. Shipping is an important part of trading if you are in international business regarding sheet fabrication.

Machinery Should Be Of High Quality

The sheet fabrication company must have good quality machinery. Like a good brake to bend sheets, if they are CNC machining the parts, then they must have good 4-axis and 5-axis machines, if they are doing metal stamping then you should consider the companies who have good die-making facilities of their own.

Designers Should Be Available

Good sheet metal fabrication companies work with good designers. Even if you consider making the designs yourself, a good company may revise it with their production manager and designers to find if the calculations and design measurements are okay. In that way, any possible problem/s can be avoided beforehand.

Consider The Product Quality Yourself

You should consider evaluating the company’s past products to find out the material types, the finishing, the tolerance. If you think the points, you can easily find out if the products are as good as others in the market. You should do the actual evaluation yourself. If the quality is good enough and satisfies you, you should proceed only after that.

Customer Services 

Customer services pre-production is a crucial point to find out the value and experience of the company. If a sheet metal fabrication company is good and values its customer, they will provide all information with transparency and professionalism. You can receive the two good qualities only from a knowledgeable and experienced company.

If you consider taking decisions from these five dimensions, you can easily determine which company can satisfy you with its sheet metal fabrication service.


Sheet metal fabrication is a very popular process in all the industries for direct products, parts of products, or product structure making. Variety in sheets and materials help you to choose the best solution for your product.

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