The file continues with any number of triangles, each represented as follows: facet normal n i n j n k outer loop vertex v1 x v1 y v1 z vertex v2 x v2 y v2 z vertex v3 x v3 y v3 z endloop endfacet The remainder of the line is ignored and is sometimes used to store metadata (e.g., filename, author, modification date, etc). Where name is an optional string (though if name is omitted there must still be a space after solid, for compatibility with some software). STL files contain no scale information, and the units are arbitrary. In the original specification, all STL coordinates were required to be positive numbers, but this restriction is no longer enforced and negative coordinates are commonly encountered in STL files today. Īn STL file describes a raw, unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule ) of the triangles using a three-dimensional Cartesian coordinate system. Binary files are more common, since they are more compact.
The STL format specifies both ASCII and binary representations. STL files describe only the surface geometry of a three-dimensional object without any representation of color, texture or other common CAD model attributes.
#Automatrons stl file software
This file format is supported by many other software packages it is widely used for rapid prototyping, 3D printing and computer-aided manufacturing. STL has several backronyms such as " Standard Triangle Language" and " Standard Tessellation Language".
STL is a file format native to the stereolithography CAD software created by 3D Systems.
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