New Moving Platform 3D Printer Saves Time and Money

Researchers from the University of Southern California Viterbi School of Engineering have created a novel method of reducing the material waste, and consequently, the cost of 3D printing using Fused Deposition Modeling, or FDM, technology. Together the team, led by Yong Chen, professor of industrial and systems engineering and PhD student Yang Xu, developed a unique, low cost, dynamically controlled surface for 3D printers. These Moving Platform 3D printers negate the need for supports, and therefore produce less waste and require less material, so are more sustainable and decrease printing costs.

In most cases, particularly those where the part in question is complex or peculiar, FDM processes require supports to balance part during printing. Chen comments, “When you’re 3-D printing complex shapes, half of the time you are building the parts that you need, the other half of the time you’re building the supports. So, with this system, we’re not building the supports. Therefore, in terms of printing time, we have a savings of about 40%.” Not only does the existence of these parts mean that the overall print time is considerably increased but it also means that the part requires additional post processing as the supports must be manually removed. This in turn not only further increases the time taken to complete the final part, but also creates room for human error, meaning that the final part will often possess shape inaccuracies or surface roughness. By eliminating supports, the Moving Platform 3D printer heavily reduces the potential for human error and vastly accelerates the overall process.

A new dynamically-controlled base for 3D printing (center) will reduce the need for printed supports (left), cutting wastage and saving time. (Photo credit: Yong Chen)

How does the Moving Platform 3D printer work?

For the most part, the Moving Platform 3D printer functions just like any other FDM 3D printer. The key difference, of course, is the moving platform. At present, the prototype functions by running each of its individual supports from a motor, which in turn moves said moving platform. The platform simultaneously raises groups of metal pins, supporting the part. After the part has been printed, the user can easily remove these pins without damaging the product.