If you want to do a quick design for 3D printing, Tinkercad is pretty easy to use. Although it was briefly in danger of going out of business, it was bought by AutoDesk who have made a lot of ...
With the drawing tools of SelfCAD, I can even draw my ideas on paper, then import them to SelfCAD using the reference image ... TinkerCAD is one of the 3D modeling programs for creating ready-to ...