They might make laws, but it won’t actually stop anything. I know people that make their own guns the hard way (with steel and effort), probably against the law already, doesn’t stop them. That’s the fun part about converting raw materials, if the materials are legal it doesn’t matter if the verb is or isn’t, people will do it. As long as there’s enough thing to do with 3D printing that the general populace wants that core technology available outlawing certain printed objects will be meaningless.
I agree. Until the oppressors grow so strong they can keep us away from fire and metal there will be guns.