Parts have many different geometries on the surface, assembled with two parts. A small cylinder insert achieved by lathe, meanwhile, outer frame of the main body was machined by CNC; machined the holes and tapped threads. Then two parts assembled together for post machine to achieved an accurate size and guaranteed the seamless assembly between parts.
After machined, parts had to be unscrewed for remove burrs and clear up, but the core is to check the fitting, to insure the small part can work smoothly with the threads.
Every surface of parts were polished by polishing machine, and hand polished. Then painted in 2K clear lacquer.