Metal 3D Printing Applications: Prototyping & Tooling – Part 1

Metal FFF—an advanced 3D printing process—offers a game‑changing path to produce functional metal parts for enterprises of every scale. Both metal and composite FFF deliver faster build times, reduced tooling costs, and improved design freedom compared to traditional manufacturing.

Here we showcase the leading use cases for metal FFF: first, concept models and functional validation; second, workholding and alignment tools.

While not exhaustive, the examples below illustrate the scenarios where metal 3D printing delivers the most benefit. Markforged encourages manufacturers to assess their workflows for parallel opportunities to harness the advantages of metal additive manufacturing.

Download our in‑depth white paper, “Metal 3D Printing Applications,” for a complete exploration of use cases and best practices.

Concept Models and Functional Validation

Metal FFF printers excel as an R&D tool, allowing rapid verification that a design meets functional requirements. The speed of build and the low logistics overhead mean prototypes can be printed and tested quickly, cutting lead times that are typical of conventional fabrication.

Prototyping is the most common application in this space. While a wide range of parts can be printed, the highest return on investment comes from parts that are economically inefficient or have long lead times when produced by traditional means.

Bespoke parts. Low‑volume components such as custom impellers and nozzles can be produced on a metal FFF printer. The complex geometries and limited quantity make this application ideal for metal 3D printing.

Cast parts. Die casting is cost‑effective for high‑volume complex parts, but prototyping is often prohibitively expensive. Metal FFF allows near‑net‑shape prototypes that refine cast designs before committing to tooling costs.

Custom CNC parts. Metal 3D printers provide a cheaper and faster alternative to third‑party CNC manufacturing, expanding internal fabrication capacity. The most impactful CNC prototypes are those with complex geometries that would otherwise require many machining steps.

Workholding & Alignment Tools

While composites have revolutionized tooling, they have limitations. Metal FFF adds durability, heat resistance, and wear resistance—qualities essential for high‑performance workholding and alignment tools.

Manufacturers can leverage the inherent strengths of metal 3D printing—lightweight structures, integrated cooling channels, and custom geometry—to produce tools that outperform traditional solutions.

Hybrid tools. Combining metal and composite prints into a single part enables users to harness each material’s strengths. For example, a metal tip paired with a plastic body offers localized wear resistance while keeping the tool lightweight.

High‑wear End‑of‑Arm Tooling (EOAT). EOAT, commonly printed with composites, also benefits from metal where:

• Surfaces require extreme wear resistance—metal tools far outlast composites.
• Tools operate in heated environments or contact hot components.
• The tool geometry is too intricate or small for continuous fiber reinforcement.

Brazing fixtures. These fixtures must withstand high temperatures. Metal FFF delivers the required strength and heat tolerance while offering custom geometry. Conventional manufacturing of such complex, high‑temperature parts is often cost‑prohibitive.

High‑wear workholding (stanchions, cradles, etc.). Tools that endure repeated abrasion benefit from the hard, wear‑resistant metals made via 3D printing—enabling customized, durable solutions.

Free Metal 3D Printing E‑Books

• Metal 3D Printing Applications
• Introduction to Metal 3D Printing
• Metal FFF 3D Printing: Step by Step