In OpenSCAD you build your part by constructing its convex hull. This is done by using primitives with known convex hulls such as rectangles and spheres and com

In OpenSCAD you build your part by constructing its convex hull. This is done by using primitives with known convex hulls such as rectangles and spheres and combining them using operations such as addition, subtraction, union, and Minkowski sum (which is an interesting peice of mathematics.) Because you interact with shapes using code, it feels much more precise than a GUI. I think this makes it easier to create parts that aren't "glitchy." You want your part to have the minimal amount of detail and using code makes this easier because you can keep track of the steps to draw your shapes to see if you made any unnecessary changes. OpenSCAD made me think about CAD in a different way.