Free CAD/CAM Software Options

OpenSCAD - 2D/3D Programmatic

http://www.openscad.org/

File Support:

• Import scad, CSG
• Export STL, OMF, AMF, DXF, SVG, CSG
• Note: FreeCAD has a plugin that can be used to create STEP files from .scad files

https://forum.lulzbot.com/viewtopic.php?t=243

Pros:

• Very fast creation parts
• Clean interface, easy to understand
• Can do basic animation

Cons:

• Script based CAD can be difficult to originally learn

Runs on:

• Windows XP or newer on x86 32/64 bit
• Linux/UNIX
• Mac OS X 10.7 or newer
• Android - https://grabcad.com/groups/free-cad-cam-software-options/discussions/scorchcad-2d-3d-cad-mobile

Photo from http://www.openscad.org/assets/img/tridimake-tutorial.png