I machine all the hardware for my xacto-ish knives on a couple vintage "Unimat" machines. These little lathes were made in Austria from the 1950s-80's and sold around the world. I remember seeing ads for them in the back of Popular Mechanics magazines when I was a kid and was lucky to rediscover one on Craigslist after I made some knife hardware with much less sophisticated tools. They're incredibly capable and versatile machines if used within their capabilities - if you make small, precise, metal things you should watch out for one! I have 4 now!