CadQuery

CadQuery is a Python module for building parametric 3D CAD models without a GUI. Short, readable scripts produce high-quality models, so a single script can generate many customizable objects - well suited to server-side integration and scientific or engineering automation.

It supports advanced modeling such as fillets, curvilinear extrudes, parametric curves, lofts, and nested assemblies built from individual parts. Models export to lossless formats like STEP and DXF as well as STL, VRML, AMF, and 3MF, and the plain-text model format can be edited and run in a web browser.

CadQuery uses the OpenCASCADE kernel through the OCP wrapper and ships built-in visualization, with optional CQ-editor and JupyterLab GUIs. Install it with conda, mamba, pixi, or pip.