One can make arbitrary threads (vertically) on a CNC using a single point cutter (limited by the height of the Z-axis/thickness of the stock which one can fit a

One can make arbitrary threads (vertically) on a CNC using a single point cutter (limited by the height of the Z-axis/thickness of the stock which one can fit a tool over/into): https://community.carbide3d.com/t/thread-milling-in-metal-on-the-shapeoko-3/5332 https://community.carbide3d.com/t/thread-milling-in-metal-on... A manual lathe will often have a gearbox which allows cutting threads on it: https://www.youtube.com/watch?v=E_KF3n3oo08 https://www.youtube.com/watch?v=E_KF3n3oo08