Geometric accuracy of models made using rapid prototyping methods. Part II. Spherical and angular elements

This article presents the second part of the research concerning the accuracy of geometric representation of models manufactured using four selected additive manufacturing methods: Direct Metal Laser Sintering (DMLS), Digital Light Processing (DLP), PolyJet Modeling (PJM), and Melted Extrusion Modeling (MEM), as presented in [1]. The paper focuses on the accuracy of manufacturing spherical and angular model geometries. For this purpose, models containing a sphere, a hemisphere, and a quarter-sphere with a diameter of ø30 mm were developed, as well as angular models used to verify the accuracy of angle reproduction: 15° and 75°, 30° and 60°, and 45°. Based on the obtained results, it was found that models manufactured using the DMLS and DLP methods exhibit the lowest deviation values.