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What is a STEP file?

A STEP file is the industry-standard, neutral format used in mechanical engineering to store 3D models with high-precision mathematical data. Unlike STL files, which use faceted triangles, STEP files contain exact geometric definitions, allowing for accurate measurement and modification across different CAD platforms. By adopting a "STEP-first" mindset for production-ready designs, you ensure your work retains the mathematical integrity needed for manufacturing, high-tolerance assembly, and long-term professional use.