I've seen these kind of marks on several steel rods, usually axles, but I don't know how are they called and which tool makes them. They are usually used to stop something, like a washer, go past them. I may need to do a couple of them on a another rod.
Does someone know how are they called and how to do them? Thanks
If you are not making 10,000 rods per day, you don't do this, you stop the thing you are trying to stop by drilling a hole through the rod and inserting a pin, typically a cotter pin or hairpin. Or applying a stop-collar with a set-screw.
If you are making 10,000 rods per day, you put the correct die in a punch press, grab the safety paddles and hit the actuator.
If you have a unresolvable perceived need to make this sort of deformation at home, put the rod in your forge and the appropriate die-set in your hardie-hole. In your anvil, which, of course, you have along with the forge and a whole lot of hammers.
