Many engineers still think of additive manufacturing as a niche process mainly suited for prototypes or plastic components. But the truth is that metal 3D printing has become a viable option for production parts, and in the right applications, it can deliver better results than traditional machining. 

Of course, additive manufacturing is not a replacement for traditional machining across the board, and it should not be treated that way. But when a part’s design goals align with the strengths of additive, it can create opportunities that would be difficult to achieve with subtractive machining alone. Here are just a few areas where i3D MFG customers have identified major opportunities for their parts:

1. Reducing Weight Significantly With No Change in Performance

One of the clearest advantages of metal 3D printing is weight reduction. This is especially important in industries such as aerospace, where every ounce matters. But even outside of aerospace, lightweight parts can improve efficiency and overall performance.

In additive manufacturing, engineers can incorporate lattice structures and other internal features that remove unnecessary material while preserving the strength the application requires. In some cases, this approach can dramatically reduce part weight compared with traditional machining. 

2. Turning Complex Assemblies Into Single Parts

With our metal 3D printing services, we can simplify assemblies by consolidating multiple components into one part. We have seen designs that would require as many as 20 separate pieces reworked into a single part.

That consolidation offers multiple benefits. First, it reduces the number of manufacturing and assembly steps, which simplifies production and shortens lead times. Second, it can eliminate welds and other joining methods that add complexity and introduce potential failure points. 

3. Features and Complexity That Machining Cannot Easily Produce

Some part features are difficult or impossible to produce efficiently through traditional machining. In other cases, they may technically be possible, but only through a process that is too cumbersome or too expensive to justify. 

In additive manufacturing, it’s often possible to create internal geometries or highly specialized features that would be challenging otherwise. Complex internal cooling channels in aerospace parts are a common example; these features can improve thermal performance while allowing for reduced overall part size and weight. 

Designing for Additive from the Start

To take full advantage of metal additive manufacturing, it is important to rethink your design rather than simply transferring an existing machined part into an additive process.

A part designed for machining is not automatically optimized for 3D printing. The best results usually come when engineers revisit the design and account for the unique capabilities of additive manufacturing from the beginning. We’re happy to assist you with design for additive manufacturing (DFAM) guidance; this may include changing certain geometry or features to allow more efficient printing without affecting functionality.

At the same time, we are transparent with our customers: we know that not every part is a good fit for additive. If a part can be manufactured efficiently with traditional machining while meeting all functional requirements, that may still be the best solution. The goal is to identify the cases where 3D printing can create real value for your designs.

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If you are evaluating whether metal 3D printing makes sense for a part, we can help you assess the design and explore the options. Contact us today and let’s talk through your project and the potential benefits of additive manufacturing!