>You can make triangles small enough that you can't tell the difference, and define them mathematically in terms of curves..? This doesn't work if you already

>You can make triangles small enough that you can't tell the difference, and define them mathematically in terms of curves..? This doesn't work if you already have a mesh. You need to generate your triangles on demand from the BREP data. Alternatively you need to use tesselation, but then you need to design your models with tesselation in mind, such as people do in blender. >Isn't this how any rendering will ultimately work? The primitive is triangles. Uhm no. 3D printing and CAM do not work with triangles. The slicer and CAM software generate tool paths in gcode. Importing STEP files into OrcaSlicer/BambuSlicer gives me better quality results and better print speeds than using STL files. I have personally never understood the love for STL files in the 3D printing community for anything that isn't the result of a blender export. Like, is it really that fun to constantly export different versions of STL files set to different quality levels? Rescaling a print in the slicer is not recommended with STL. You have to re-export the model from blender where the tesselation happens.