How to Go From 3D Modeling to a Quality Custom Metal Fabrication

When it comes to designing a product, transitioning from an initial concept to a custom metal fabricated part is rarely a simple process. This is where 3D modeling services can play a crucial role in streamlining the journey from CAD drawings to prototyping and finally to a clear 2D blueprint for custom metal fabrication.

This is why it's essential to work with a structural steel detailer who has real-world experience in fabrication. Such professionals are well-versed in navigating CAD, 3D modeling, and CAM software to determine the most efficient processing method for your design. This is especially important in structural steel detailing, where multiple steps must be completed before a product can move forward in development.

Let’s start by exploring the critical design phase and how it influences the entire structural steel detailing process.

Design Analysis Drives Custom Metal Fabrication

As mentioned earlier, metal fabrication design is about turning an idea into a tangible form—both in 2D and 3D. Think of your design as the "first draft" of your custom metal fabrication project.

Once your initial design is ready, a steel detailer can take that draft and begin using 3D modeling to create shop drawings for the fabricator. This stage allows for necessary adjustments to the design, ensuring the final product is both functional and efficient to produce.

It's important to note that just because a design exists doesn’t mean it can be manufactured exactly as drawn. This is particularly true for custom fabricated steel parts, which often go through a “fabrication design” step before moving on to other stages of development.

This is why partnering with an experienced detailer like Southern Metal Fabricators is key. They act as your engineering and design partner, analyzing various factors to ensure your end product:

  • Can be successfully fabricated.
  • Retains strength, durability, and structural integrity.
  • Can be assembled or arranged as intended.

Metal Forming Shapes Your Final Product

Your structural steel detailing partner must have the expertise to bend, shape, punch, and form metal to meet the demands of custom metal fabrication. Metal forming involves using industrial machines to alter raw materials into precise shapes and sizes, often under high pressure and force.

For example, sheet metal rolling is a common technique used to create curved or cylindrical shapes. Hot rolling is typically used for raw stock, while cold rolling is more common for shaping sheets or plates into curves or angles. Plate rolling creates smooth curves, while angle rolling produces sharp, defined angles—often at 90 degrees.

Metal bending is another critical process. Mechanical and CNC hydraulic press brakes can bend metal plates up to 12 feet long at any angle. At Southern Metal Fabricators, we have four press brake machines, including a 400-ton press capable of handling ¾-inch steel plates and a 10-ton machine for more delicate tasks.

For heavier punching applications, our 50-ton hydraulic web and flange beam punches provide the power needed for mass production. When precision is required, our CNC 30-ton Strippit punch press ensures accuracy and consistency.

Cutting Is Essential for Meeting Structural Steel Standards

Custom metal cutting is a vital part of meeting structural steel specifications. Cutting processes may involve specialized saws, shears, or high-definition plasma and laser cutters. Punching, a subset of cutting, creates holes or openings in metal pieces.

At Southern Metal Fabricators, we can cut metal to almost any size or shape, from thin copper sheets to thick carbon-steel I-beams. Our advanced equipment includes metal sawing, CNC plasma cutting, steel plate shearing, and laser cutting services, such as our Trumpf laser cutter.

Finishing Ensures Quality in Custom Metal Fabrication

A full-service metal finishing shop is crucial for achieving high-quality results. At Southern Metal Fabricators, we offer a wide range of on-site finishing services, including surface preparation and final treatments. We understand that carbon steel can rust quickly if not properly protected, so we prioritize immediate painting to prevent corrosion.

Our finishing services include:

  • Metal Surface Preparation: We prepare surfaces to SP1–SP10 standards, using techniques like sandblasting, wire brushing, or bead blasting to achieve a superior finish efficiently.
  • Hot-Dip Galvanizing: Often applied after assembly, this process provides long-lasting protection, especially for outdoor structures like ladders and stairs.
  • Painting: After surface preparation, we apply primer and paint in a controlled booth, ensuring consistent thickness and quality. We also use direct-to-metal (DTM) paint for a single-coat solution.

Custom Welding Services Ensure Strong Assemblies

In addition to structural steel detailing, Southern Metal Fabricators offers custom welding services to ensure all assemblies and subassemblies fit together precisely. Our certified welders have over 30 years of combined experience in meeting industry codes and standards.

We are familiar with ASME, AWS, and Canadian welding standards (CWB), and we provide documentation at every stage of the process. Our in-house equipment includes MIG and TIG welders, as well as stud welding machines. We are qualified to weld structural steel according to AWS D1.1 and D1.6 standards.

Choosing the Right Steel Detailer for Your Project

As mentioned earlier, working with a skilled structural steel detailer is essential for meeting your unique needs in custom metal fabrication. A good detailer should possess the following qualities, especially during the critical design phase:

  • Communication Skills: Effective collaboration with designers and fabricators helps avoid mistakes and streamline the process when changes are needed.
  • Familiarity with Industry Standards: Understanding OSHA, AISC, and other relevant standards ensures compliance and safety in construction projects.
  • Expertise in 3D Modeling and Design Software: Proficiency in CAD, 3D modeling, and CAM software enables accurate planning and optimization of designs for fabrication.

Structural Steel Detailing Requires Fabrication Expertise

Structural steel detailing and custom metal fabrication are the backbone of many industries—from agricultural silos and petroleum tank access ladders to utility water towers and storage tanks. That’s why many manufacturers choose Southern Metal Fabricators as their trusted partner, relying on our 32 years of experience and advanced automation to support their projects.

With our state-of-the-art facilities and dedicated team, we're equipped to handle even the most complex detailing and processing projects. Whether you need help with design, fabrication, or finishing, we’re here to bring your vision to life.

Visit our structural steel fabrication page to discover more about the benefits of outsourcing your next detailing or processing project. Or give us a chance to say, “Yes, we can do that!” by contacting us today.

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