NASSCAD

nasscad.comDR 9 Accessible 48 views

Design Assets NASSCAD is a free, open-source CAD application that runs in the browser or offline on Windows.

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Editor's Review

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NASSCAD stands out for combining browser-based modeling with a downloadable Windows version, and for processing models locally without requiring an account. STEP import/export with AP203, AP214, and AP242 support, plus IFC geometry viewing, gives it unusual breadth for a free tool. The trade-off is

Site introduction

NASSCAD is positioned as a lightweight, open-source CAD option for people who need to create or inspect mechanical parts without installing a large desktop suite. It runs directly in a browser and is also available as a Windows download, with model processing kept local and no account required. The project is licensed under AGPLv3 and is free for both personal and commercial use.

The core workflow starts from sketches or primitives, where dimensions are set and shapes combined before fillets and chamfers are added. Fabrication output includes STL and 3MF for 3D printing, plus SVG and DXF sections for cutting workflows. STEP files can be browsed by assembly folder, part, and colour, and exported as AP203, AP214, or AP242. The same workspace can also inspect IFC building geometry.

The site includes worked examples and a STEP workflow guide, and a browser-based animated engine model demonstrates what NassScript can produce. These resources make it easier for newcomers to understand the modeling and export pipeline before committing to a project.

NASSCAD suits hobbyists, makers, and engineers who need quick part modeling or file inspection, especially when they want to avoid cloud uploads or account sign-ups. Teams evaluating open-source CAD for commercial work may also find the licensing and local processing appealing. Beginners should start with the worked examples, while experienced users can go straight to STEP import and export. Overall, it is a practical choice for focus