[MWB]

Originally Posted by Cory

These are made on a screw machine. Similar to a live tooled lathe, except there's a bushing in the headstock that allows the material to be fed out to the tool, so you're constantly cutting at the spindle nose with no overhang. I'm not aware of any machine that can make these more efficiently.

Oh we have 7 Citizen machines at my work, but my boss thought that it wasn't worth the setup time to use them for such a small order. I was even using ground stock that we bought for the screw machines too!