Titanium magnetic sump plugs for rally cars
I’m on with a batch of 30 magnetic sump plugs for rally cars. Its hallucination time! so repetetive but being titanium its always a bit exciting as you can never be sure two cuts at the same setting will result in exactly the same diameter! And when i was facing one off it tried to rag the holder out of the chuck!
To make them magnetic I bore them out up the thread and locktite a magnet in. Because its a full thread, to mill the hex they have to be held in a holder to avoid crushing the threads.