Spark eroder. Hard bit was making the templates and getting the fit as you have to cut it oversize. I never want to see another ribbon of emery paper. Once assembled surface ground and the finish polished by draw filing (wrapped)
Can mill,turn,grind,weld,form, and obviously all the hand skills needed for one off work. Bit rusty after all these years i should think. Still have a woodturning lathe though.
One of my tool room apprentice pieces back in the day some 30 years ago. Another was a scale steam engine that the college group made from scratch. only thing we were supplied were rough cast wheels. Wish I had a pic of that. Still have the tool box i made!
We made some really lovely things for presentations and retirements etc.
Hence my disgust with the metal molestation.