Ive looked at what you do and like it.
So ill point you in the right direction.
Go into your kitchen, look in your cupboard for metal screw topped
Take off the lid and look how the edge is made.
Theres your answer. you do it cold from the cuff metal itself. You
can do this with a chasing hammer in the grooves of a tinmans stake.
Let us know how you get on.
Experiment all the time!!