3D Printing and CNC Machining: How to Combine Both for Maximum Precision
3D printing and CNC machining (Computer Numerical Control) represent two radically different approaches to manufacturing. One builds up material layer by layer in an additive process, while the other removes material subtractively with extreme precision. At first glance, they may seem incompatible. However, when smartly combined, these two technologies become complementary and enable levels of precision, complexity, and performance that are otherwise difficult to achieve.
3D printing and CNC: two complementary strengths
3D printing is appealing for its ability to produce complex, optimized geometries that are often impossible to achieve using traditional techniques. Thanks to this design freedom, engineers and designers can create lightweight, organic, and innovative parts. However, the dimensional tolerances and surface finishes it offers are not always sufficient in demanding industrial contexts. This is where CNC machining comes into play. With micron-level precision and proven stability on tough materials like metals, CNC machining ensures the functional quality of parts by adjusting or refining critical areas. Together, these technologies allow for the creation of complex parts while ensuring reliability and adaptability.
A hybrid process for optimal results
Combining 3D printing and CNC machining involves designing a manufacturing workflow with clearly defined stages. The process begins with 3D modeling of the part, taking into account, from the design stage, the areas that will require CNC finishing. Once printed, the part is prepared for mechanical finishing on a CNC machine. This might include drilling precise holes, surfacing contact areas, or threading surfaces. Machining corrects any inaccuracies from the 3D print and provides impeccable functional finishes. This hybrid approach not only optimizes production time but also helps reduce costs and material waste, while ensuring consistent and reliable results.
Real-world applications in industry
The combined use of 3D printing and CNC machining has quickly spread across various industrial sectors. In aerospace, for example, this combination enables the production of lightweight, complex parts while ensuring precise assembly interfaces. In the medical field, custom implants or surgical guides are manufactured with surfaces perfectly tailored to the human body thanks to CNC finishing. In the automotive and tooling industries, it allows for the rapid creation of prototypes or jigs with machined critical areas for immediate functionality. These examples demonstrate that the combination of both technologies is no longer just theoretical—it’s a productive reality.
The challenges of a hybrid approach
Despite its clear advantages, the alliance between 3D printing and CNC machining comes with technical challenges. Designers must anticipate potential deformations caused by the printing process, ensure precise repositioning on CNC machines, and select materials compatible with both methods. Additionally, transitioning between steps requires solid proficiency in CAD (Computer-Aided Design) and CAM (Computer-Aided Manufacturing) software. Fortunately, digital tools are evolving rapidly, making it easier to integrate these steps into a single production flow, with optimized supports, repositioning references, and streamlined post-processing.
A partnership geared toward innovation
3D printing and CNC machining are not opposing forces—they are complementary. By combining them wisely, it’s possible to push the limits of design while meeting the precision and robustness requirements of modern industry. This hybrid approach offers an effective response to today’s challenges in custom manufacturing, lead time reduction, and product innovation. For manufacturers seeking a competitive edge, blending these two technologies is a powerful strategic lever.
GM Précision: high-performance hybrid manufacturing
GM Précision is equipped with CNC and conventional machines for milling and turning, offering complete services including surfacing, mechanical engraving, system assembly, prototype and unique system development, with 3D design and technical documentation capabilities. Committed to meeting market demands, GM Précision regularly invests in modernizing its facilities and software tools to ensure high-quality products, delivered on time and at competitive prices.
Contact GM Precision today for a fast and personalized quote.
3D Printing and CNC Machining: How to Combine Both for Maximum Precision
3D printing and CNC machining (Computer Numerical Control) represent two radically different approaches to manufacturing. One builds up material layer by layer in an additive process, while the other removes material subtractively with extreme precision. At first glance, they may seem incompatible. However, when smartly combined, these two technologies become complementary and enable levels of precision, complexity, and performance that are otherwise difficult to achieve.
3D printing and CNC: two complementary strengths
3D printing is appealing for its ability to produce complex, optimized geometries that are often impossible to achieve using traditional techniques. Thanks to this design freedom, engineers and designers can create lightweight, organic, and innovative parts. However, the dimensional tolerances and surface finishes it offers are not always sufficient in demanding industrial contexts. This is where CNC machining comes into play. With micron-level precision and proven stability on tough materials like metals, CNC machining ensures the functional quality of parts by adjusting or refining critical areas. Together, these technologies allow for the creation of complex parts while ensuring reliability and adaptability.
A hybrid process for optimal results
Combining 3D printing and CNC machining involves designing a manufacturing workflow with clearly defined stages. The process begins with 3D modeling of the part, taking into account, from the design stage, the areas that will require CNC finishing. Once printed, the part is prepared for mechanical finishing on a CNC machine. This might include drilling precise holes, surfacing contact areas, or threading surfaces. Machining corrects any inaccuracies from the 3D print and provides impeccable functional finishes. This hybrid approach not only optimizes production time but also helps reduce costs and material waste, while ensuring consistent and reliable results.
Real-world applications in industry
The combined use of 3D printing and CNC machining has quickly spread across various industrial sectors. In aerospace, for example, this combination enables the production of lightweight, complex parts while ensuring precise assembly interfaces. In the medical field, custom implants or surgical guides are manufactured with surfaces perfectly tailored to the human body thanks to CNC finishing. In the automotive and tooling industries, it allows for the rapid creation of prototypes or jigs with machined critical areas for immediate functionality. These examples demonstrate that the combination of both technologies is no longer just theoretical—it’s a productive reality.
The challenges of a hybrid approach
Despite its clear advantages, the alliance between 3D printing and CNC machining comes with technical challenges. Designers must anticipate potential deformations caused by the printing process, ensure precise repositioning on CNC machines, and select materials compatible with both methods. Additionally, transitioning between steps requires solid proficiency in CAD (Computer-Aided Design) and CAM (Computer-Aided Manufacturing) software. Fortunately, digital tools are evolving rapidly, making it easier to integrate these steps into a single production flow, with optimized supports, repositioning references, and streamlined post-processing.
A partnership geared toward innovation
3D printing and CNC machining are not opposing forces—they are complementary. By combining them wisely, it’s possible to push the limits of design while meeting the precision and robustness requirements of modern industry. This hybrid approach offers an effective response to today’s challenges in custom manufacturing, lead time reduction, and product innovation. For manufacturers seeking a competitive edge, blending these two technologies is a powerful strategic lever.
GM Précision: high-performance hybrid manufacturing
GM Précision is equipped with CNC and conventional machines for milling and turning, offering complete services including surfacing, mechanical engraving, system assembly, prototype and unique system development, with 3D design and technical documentation capabilities. Committed to meeting market demands, GM Précision regularly invests in modernizing its facilities and software tools to ensure high-quality products, delivered on time and at competitive prices.
Contact GM Precision today for a fast and personalized quote.