
Oct 30, 2018
By Christina M. Fuges, Contributing Editor, Additive Manufacturing Hype continues to surround additive manufacturing. These three factors can help determine whether a part is worth 3D printing. Digging into metal additive manufacturing quickly reveals how expensive it can be, as some parts produced using incumbent technologies, such as laser sintering and binder jetting, can cost thousands of dollars. If there’s one lesson Matt Sand, President of 3DEO, a Los Angeles, California-based metal AM parts supplier, has learned over the last few years, it’s that cost is everything when it comes to serial production. “If you’re not in the ballpark on cost, you might as well not even play the game because there’s no way to get into production without being cost competitive with conventional manufacturing techniques,” Sand says. “If you are not cost competitive, you’re not at the table,” So, to get the total cost structure down, 3DEO developed an end-to-end manufacturing process around Intelligent Layering, a very low-cost metal additive manufacturing technology the company’s founders invented. Based on binder jetting technology, Intelligent Layering uses a proprietary spray system to bind the entire layer, and then uses a CNC end mill to cut the perimeter of the part and any internal features. (Read more about 3DEO’s technology and company strategy.) Although 3DEO’s Intelligent Layering process offers a new take on additive, the company’s differentiator is that “we are not trying to sell machines, we’re only selling parts,” Sand says. The competition for its additive process is not metal 3D printing; it’s traditional manufacturing. 3DEO is competing against CNC machining and metal injection molding and is already cost competitive with both of these technologies when it comes to small and complex metal parts, according to Sand. There are three key factors he considers in determining whether it will be cost-effective to 3D print a given part: 1. Part Size Is it bigger/smaller than a golf ball? One thing Sand has learned over the last few years is that as part size increases, the cost increases on an exponential curve. Smaller (golf ball-sized) parts manufactured traditionally are price competitive. However, as the part size starts to reach softball size and greater, the cost skyrockets. It’s not uncommon in laser sintering for very...