hi all, well my 1st post here, hope this is ok and not too 'off topic'. I'd guess this is an 'old' topic. a search in the mailing list archives shows a large number of threads. But are there any plans to make Bezier curves, Bezier surfaces and/or even b-splines and better still NURBS into OpenSCAD? There are apparently many libraries shared on the web, and some in Github, some in Thingiverse etc. These are mainly 'libraries' in openscad codes to make the Bezier curves, surfaces etc. While I'm not in any feeble way good with the 'technology' (and math) about these, Bezier curves, surfaces and preferably b-splines, NURBS are well known means to make "organic" looking models that is very difficult otherwise. many models has 'mechanically geometrically rigid' looks otherwise, e.g. fix patterns of circles, elipses etc . Some of the well known articles found from a google search are like these https://raphaelluckom.com/posts/bezier_curves.html https://openhome.cc/eGossip/OpenSCAD/BezierCurve.html and one of those 'famous' models that has been done with Bezier (curves, surfaces) is non other than the Utah teapot https://www.scratchapixel.com/lessons/geometry/bezier-curve-rendering-utah-teapot Accordingly, we can't really put the Bezier control points and hope to make affine transforms (rotate, translate, scale, etc) without breaking the orginal shapes, is that true? And accordingly NURBS is less affected by those affine transforms and is able to be transformed with the model components. This is a further reason I'd think having NURBS in as model components in OpenSCAD is probably a good idea. just 2 cents, � andrew