Large-Scale Rapid Liquid Printing

Abstract

Abstract Despite many advances, most three-dimensional (3D) printers today remain in the realm of rapid prototyping, rarely being used for manufacturing. Currently, the greatest challenges to advancing 3D printing technology are small build volumes, long print times, and limited material properties. In this article, we present rapid liquid printing (RLP) as a solution to these challenges. RLP is an experimental process that uses a tank of granular gel as a reusable support medium to greatly increase the speed, size, and material properties in 3D printing. The RLP machine can freely print in any direction, rather than layer by layer, depositing liquid material into the granular gel to form 3D structures. The RLP deposition system can use any one- or two-part material that is photo or chemically cured, expanding the range of possible materials to include high-quality industrial-grade rubbers, foams, and plastics, among many others. It is platform independent and can be implemented on any computer numericall...