CAD X11 Free is a general CAD system ideally suited for drafting (strengths in mechanical drafting) and light wireframe and surfacing modeling on Windows。
Standard features
CAD X11 Free include 3-D wireframe modeling, surfacing, DXF import, 2-D drafting with ANSI, ISO and JIS dimensioning, geometric tolerancing, TrueType Font support, undo/redo, dynamic rotations, multiple views, data verification, geometric analysis, crosshatching, Windows printer support and PDF output.