Additive Manufacturing (AM), used interchangeably with ‘3D Printing,’ is witnessing explosive growth and adoption. Increasing number of businesses around the world now view additive manufacturing as an essential link in their value chain. AM of metal parts and components is fast gaining prominence for its potential to disrupt traditional supply chains by reducing inventory and digitalising production. The ability to manufacture complex parts using AM is finding widespread application across industries with Aerospace, Medical and Automotive industries predicted to account for 51% of total spend on industrial AM by 2025. This brings the metal AM market to be worth an estimated $10bn by 2030.

Additive Manufacturing processes give designers the flexibility to push the limits of engineering design beyond the constraints of traditional manufacturing methods. However, AM, like any other process, works well when applied thoughtfully. We’ve shortlisted a couple of factors to consider when evaluating Designing for Additive Manufacturing (DfAM):

Part & Design objective selection: Often assessed independently, part selection and design objective are closely linked. Parts can be evaluated based on parameters including; size and weight, production volume and lead time, surface finish requirements, functionality and criticality and traditional cost of manufacturing. Parts most suited to additive can then be shortlisted. The best suited design objectives become evident during the selection exercise e.g. weight reduction, performance improvement, lead time reduction etc.

Availability of material. Designers need to be aware if the product material is available in powder or filament form for metal or plastic production. Most commonly used metals, such as Stainless and Maraging Steel, Aluminum, Titanium, Cobalt Chrome and Nickel based alloys are easily available. For non-metals, ABS, PLA, Nylon, Polypropylene and Polycarbonate are being offered by most machine & filament manufacturers. New materials are being progressively added to these options ensuring greater flexibility for designers.

Solving the right problem: The Additive approach is increasingly being used in New Product Development (NPD) and in the re-design of existing parts for deriving greater value in terms of cost or performance. All parts manufactured with Additive need to perform safely and reliably in their operating environments, so it is important to have a thorough understanding of these and to look at the trade-offs between performance parameters.