A novel 3D printing process called Selective Inhibition Sintering (SIS) promises to allow manufacturing of consumer 3D printers* that can print parts made of high-performance metals, which high-cost industrial 3D printers can already do.
The new process, developed at the Center for Rapid Automated Fabrication Technologies at USC, is based on existing low-cost inkjet printing technology. It differs from traditional research in powder sintering* (a process of fusing materials using heat and pressure), which focuses on enhancing sintering.
Instead, SIS prevents sintering in selected regions of each powder layer, using a sintering inhibitor — the inverse of traditional metal additive-manufacturing processes. The engineers explain this innovative process, show sample parts printed using the technology, and discuss the next steps in research and development in an article in the journal 3D Printing and Additive Manufacturing
- Torabi Payman, Petros Matthew, and Khoshnevis Behrokh. 3D Printing and Additive Manufacturing. September 2014, 1(3): 152-155; DOI:10.1089/3dp.2014.0017 (open access until December 6, 2014)