Sculpture CNC Art File

I need a production-ready 3D relief sculpture file that I can load straight into my CNC workflow. The design must be clean, machinable and delivered in a common format such as STL, OBJ or STEP—whichever best preserves detail for relief carving. Please base the geometry on standard relief-sculpture practices: consistent Z-depth, no undercuts that a standard 3-axis mill can’t reach, and smooth transitions so finishing time on the machine stays minimal. If you can optimise or suggest ideal tool-sizes, even better, but the core deliverable is the completed digital model. Because I’m working against the clock, I’d like the finished file as soon as possible. When you reply, focus on your experience with similar CNC relief projects; that context will help me choose quickly. I’ll give prompt feedback and approve the design once it imports error-free and previews correctly in my CAM software.