Check out a suite for managing CAD materials on your Mac. Work with a collection of instruments for creating, editing, removing, replacing, updating, and restoring model projects, print project elements, sketches, multiple versions of the same materials, etc.
SelfCAD 1.43.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Design & Photo Tools, more precisely 3D Modeling. This free Mac application was originally developed by CROSSBROWSER 3D LLC. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
SelfCAD combines 3D modeling and 3D printing software features and tools to suit your designing needs. Therefore, you can create anything from a simple sketch to a fully-fledged design with end-to-end 3D modeling software tools, such as Sketching, Sculpting, Rendering, all the way to 3D Printing.
You may want to check out more software for Mac, such as ImageVis3D, Trapcode Echospace or formZ RenderZone Plus, which might be similar to SelfCAD.