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I have been using OpenSCAD to create cool geometric designs for 3D printing on fabric, with great results. The functional model is likely unfamiliar to most developers, but I have found that I can be efficient and productive with it.

Check out my repos of OpenSCAD objects at https://github.com/jeffbarr/OpenSCADObjects and Truchet Tilings at https://github.com/jeffbarr/TruchetTilings .

My code kind of looks like the C that I wrote in the 1980s, with lots of braces and careful indenting -- not sure if that is a bug or a feature.

As another commenter noted, use the latest nightly build for best results.