Analysis of influence factors on part quality in micro-SLA technology

Abstract Stereolithography (SLA) is one of the most widely known technologies in the scope of additive manufacturing. It consists in printing layer by layer a photo-polymerizable liquid resin using ultraviolet light. This technology is used for creating models, prototypes and production parts. This paper studies the influence of different parameters in the Micro-SLA (for small scale production) process. The analyzed factors are the resin type, layer height, part orientation and cleaning operations. Our study includes the use of two different resins, widely used in dental and jewelry applications, and the effect of changing the orientation of geometrical primitives in the micro-SLA printing quality.