With a lathe, we are told, all other machine tools can be built, including a milling machine ... the use of a plain old deep 19mm socket as a clutch for the power feeds. The 12-point socket ...

Take an old milling machine cutter that has seen its best days and anneal it. This will make as good a ratchet wheel as you want. A ratchet wheel, A, should be keyed on the drill carrier or spindle B.