That said, more triangles aren’t always better. These facets will show up on the printed part, so it’s important to make sure the STL has the correct resolution. If the STL uses too few triangles, curved surfaces will be faceted. Tessellation is the process of dividing the surface of the part into triangles. Compared to other CAD file formats, STL files have relatively little information. The STL file lists the location of each point of every triangle as well as which side of the triangle faces outwards. STL files describe the surface of the part by breaking it into a collection of triangles. Originally created and developed by 3D Systems and now supported by many other software options, STL is considered the preferred and standard file type to use for 3D printing. This tip covers how to effectively design 3D-printed parts for STL. The STL file, short for stereolithography, is the primary CAD file format that’s used for additive manufacturing (3D printing) design projects. We know you have a range of CAD programs and file format options to choose from when designing and sharing your part designs.
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