Yeah I had the same issue. You don't get enough resources till after the third torque bar unlockable room passes by I think.
You just have to go back.
What's messed up is that I don't remember where they are exactly, don't care too much about back tracking this game, and finally when I got enough resources to get the bar, I made three and I'm in chapter 12 and have used like one since :/
The very first torque bar room you get to is during the optional quest in chapter four. And in the room the key card unlocks is 20 tungsten which you can use to make a torque bar. I never had to backtrack to open a door. Ever.
"We live in a world of give and take, but not enough men are willing to give what it takes"