I designed it with nurbs. The picture is an excellent print of Rhino not a render. I most often use print instead of render that takes long more than an hour due to my old computer.
Rhino has a developed internal rendering system that is good for the fast and powered computers, but as far as I examined, Keyshot that is an external rendering machine is faster for weaker computers like mine.
I have to install Keyshot again to render some of my works occasionally
your models keep getting better and better!
… I’d challenge you to push a bit and try and copy some more complicated real world objects much like @Gijs has done in one of my favorite threads here-
