my humble and mostly DIY'ed in-house CAD/CAM processing of an Aikido Tube Preamp...
fresh from the CNC, still requires cleaning and application of an anti-oxidant protective layer... those old school insulating or plastic varnish can also be used but I don't use them, they wear off and don't protect the copper for a long time.
fits like a condom?
and that gentlemen is how we do it that...