![]() ![]() That’s why you don’t need any internal data, the 3D printer only cares about the external shape and the inside is created by a secondary processor (called a slicing software, on the side of the 3D printing company). That’s right, an STL file just shows the external makeup of a part without any internal solids, also called a “mesh model”.īack in the late 70s, STL files were created simply as a way to 3D print a model, and that’s the primary function of an STL model to this day. There’s no way to create an STL model from scratch, since the model itself doesn’t have any volume. In CAD, an STL model always starts as a solid, 3D model. All three of these acronyms sum up exactly what the file is: a collection of triangles that make a solid part. The name STL stands for stereolithography, Standard Triangle Language, or Standard Tessellation Language. ![]() We’ll explain why they’re great, why engineers love them, and why manufacturers highly prefer them. In this guide, we’re going to introduce STL models. Everyone knows that 3D printers are the newest way to quickly make parts at low costs and fast turnarounds, but that’s only possible with the right file types. ![]()
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