Політ. Сучасні авіаційні технології. 2021

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Preparation of geometric data for 3D prototyping
(National aviation university, 2021-04) Momotenko, Ruslana; Terzi, Artem; Vlasenko, Yuryi
Despite the presence of high-tech CAD/CAM/CAE-systems, the problem of exchanging engineering data, primarily the structural elements of models, remains at this time not fully resolved. Both open data formats, such as STEP, IGES, etc., and polygonal STL formats, etc., do not solve the problem. Of course, these problems increase as the complexity of product models grows, but they also exist when using 3D prototyping technologies.
Procedure of editing existing polygonal models by SolidWorks system
(National aviation university, 2021-04) Rohozhyna, N.; Samoilenko, Ivan; Meleshko, Ksenia
The ability to use 3D printing technology directly depends on the quality of the input geometric model. It is usually difficult to see small defects, missing triangles, convex and other deformations of the grid in slicers. There are online services stlfixers that fix network models. They quickly fill in defects, but are limited by the size and number of triangles of the model. In this case, slicers "do not see" the smallest holes in the grid or one / two triangles that protrude beyond the shape of the part, such defects are simply not printed, so in most cases stlfixers are quite enough.