Load or generate a shape, then open the Download / stream menu and click 3D (STL). You get a file (cncfoam_result.stl) of the carved 3D solid — the actual shape the wire leaves in the foam, rebuilt as a watertight mesh — ready to 3D-print, check in any viewer, or drop into CAD.
It is the carved result, not an editable parametric model. There is no separate OBJ download button, but every shape you publish to the library also ships an OBJ behind the scenes that powers the rotatable 3D viewer on its detail page. To go the other way and cut an existing STL/OBJ, use ＋ Load parts → Import STL / OBJ, which auto-builds a visual-hull cut.
It is the carved result, not an editable parametric model. There is no separate OBJ download button, but every shape you publish to the library also ships an OBJ behind the scenes that powers the rotatable 3D viewer on its detail page. To go the other way and cut an existing STL/OBJ, use ＋ Load parts → Import STL / OBJ, which auto-builds a visual-hull cut.