Hi hi helloI dont really know what these are called exactly? I drew this from a photo. There are spaces in there and lines. Sure its not exact what my reference was but its pretty close. The original is in blender and you'll get all the shapes forever to control and manipulate, three pieces (one mesh has 2 minor unlinked objects). The STL mesh has a sub surface 3 modifier on it and a plane under the pieces for simplicity sake- and a random duplicate floating around without mirror or sub modifier on it for easy rearranging. My topology is not perfect but pretty sound.

As for the CNC side of it... Object should be milled around 15 inches and .5 tall with a 1/16 ball. If you buy the file and would like to discuss toolpathing, I will happily lend my advice on speeds and feeds for whatever material you're considering.

Very greatful thank you for your attenion and supportUNA