Like spl, I am a Tool and Diemaker. Have also dabbled a little bit in moldmaking. i started from the ground up. First being a punch press set-up man, to being a "button pusher", to learning how to program and set-up cnc's, to finally getting my apprenticeship in Tool&Die. And earned my Journeymans card a few(lol) years back. Been in manufacturing for 20yrs. In all reality, the more you can learn to do the better off you will be. i have learned, and still learning, how to integrate automation(plcs, air logic, motion controls) in the things i do. The more well rounded, and informed about whats out there, the more "value" you can offer a company(hence better pay, more room for advancement). I am actually half way through an assoc's degree in electro-mechanical engineering. And like to dabble in electronics( servo's,steppers, motion control).
And Spl, I actually knew(know) a Mechanical engineer that could machine like you wouldnt beleive, but he was a Tool and Diemaker first. He knew how to engineer a part that would be usuable the first time, and what it took to acutally make the **** thing, unlike the ones you meet today. But he is retired by about 10yrs now.