Need A Metal Part (Not Sure Which Category)

Hello. I’ve never really worked with metal before but need a metal piece from an expired patent for a product I’m working on. How would I go about making/acquiring this item, presumably made of aluminum, and does Makerspace have the equipment and education available to make/learn how to make it? It doesn’t have to be exact, but must provide the same function in roughly the same size. It’s a “cricket spring” or “pop spring” or “pop o matic” found in the Trouble game.

Thank you.