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STEP

 
 
CAD file format, STEP, stands for Standard for The Exchange of Product model data. STEP is a 3D model file that is built in an ISO Standard Exchange format. Often it is the format employed when users who are running different CAD software programs want to exchange 3D models. Housed within the file is three-dimensional data that is identifiable by a variety of software systems. STEP file format is modular in nature, enabling developers to revise it according to their own specs. This file format dates back to 1984, as a follow-up response to Initial Graphics Exchange Specification (IGES). The first STEP standard wasn’t actually released until 1994, due to the file format’s complexities. STEP is revised frequently. Its extensions include .step, .stp, .stpz, .ste or .p21.
 
 

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