You sound like the guy the hell party drove screaming from the room.
Reading back, that came out more antagonistically than intended, but the point stands.
I'm certified to NASA standards when it comes to disassembling electronics (which is more useless than you'd think) and they beat me on occasion.
As far as the metallurgy goes it would depend on the function of the component in question.
The point I was trying to make was that if you don't know what to look for, machines even today are sufficiently complicated that you cannot simply take them apart, note down what bits go where, put them back as you found them and expect them to work.
In particular, you cannot expect to copy a component and expect that component to work, if you don't know what sort of component it is. It's not just "a block of black plastic, probably intended to keep these two elements apart." - it's full of microcircutry. But who'd know if they weren't familiar with the idea of microcircuits?
Both the atmospheric requirement and the alignment issue are real btw.
As someone mentioned, most harddisks will stop working if opened and while I'm not terribly familiar with that exact design, I've worked with several devices that needed their noble-gas atmosphere, as well as several components that reacted measurably with the oxygen in the air - that effect almost botched my bachelor-project btw.
Similarly, I've used devices where the aligment of components (mirrors) was a major issue, to the point of a thousandth of a degree or more as I recall.
And that was just for seeing small groups of atoms, not the subatomic particles that a teleportarium might well require.