Show HN: Nasscad – local-first 3D CAD for browser and Windows

Nasscad is a local-first 3D CAD application available for browsers and Windows that enables users to create, import, and export 3D models with features like project saving, STEP file support, and assembly browsing. The software offers scripting capabilities, supports multiple STEP protocols (AP203, AP214, AP242), and can handle large assemblies with optimized import and export workflows. Version 4.7.0 includes improvements to surface quality, PMI/GD&T annotation support, and performance optimization for complex files.