cad-skill

Use this skill when the user wants to design a 3D-printable physical object they intend to manufacture. Triggers: any mention of '3D print', 'STL', 'parametric model', 'Gridfinity', 'enclosure', 'bracket', 'mount', 'case', 'housing', 'CadQuery', 'OpenSCAD', or a specific FDM printer (Bambu Lab, Prusa, Ender); questions about print-friendly design, snap-fits, tolerances, or wall thickness; and requests for functional parts like Arduino enclosures, cable organizers, wall mounts, adapters, or mechanical components. Also fires when the user describes a real physical object to make, provided the goal is to manufacture it. Do NOT use for: 3D rendering, animation, game assets, digital-only art, photogrammetry, sculpting, editing an existing STL file the user already has, or any 3D work that is not heading toward a printer.