Typically, STEP can be used to exchange data between CAD, CAM, CAE, PDM/enterprise data modeling and other CAx systems. However even today both formats co-exist and data in IGES and STEP represent lion share of all CAD files.
STEP has been initially designed with the idea to supersede the IGES format (which was the first broadly used vendor-neutral CAD file format). As a result, STL files contain no scale information, and the units are arbitrary.STEP or "Standard for the Exchange of Product model data" is also referred as ISO 10303. All STL coordinates were required to be positive numbers in the original specification, but this restriction is no longer enforced, and negative coordinates are commonly encountered in STL files today. Binary files are more common since they are more compact.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. The STL format specifies both ASCII and binary representations. STL files describe only the surface geometry of a three-dimensional object without representing color, texture, or other common CAD model attributes. It is widely used for rapid prototyping, 3D printing, and computer-aided manufacturing.
Many other software packages support this file format. STL is a file format native to the stereolithography CAD software created by 3D Systems. SketchUp (easy-to-use 3D design software that enables conceptual designs to be generated, viewed, and shared quickly and easily) is a three-dimensional model file that may be placed within Google Earth or shared through the 3D Warehouse option.
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