Anybody here read Schlock Mercenary? ( schlockmercenary.com )
In that universe, all kinds of things are made in "Fabbers" (fabricators)
Fabbers are variable in size, ranging from big enough to engulf (or build) an entire battleship, to barely big enough to build a torpedo. They're how a ship resupplies itself on long missions, they just snap up the raw resources needed and then fab what they need. Ammunition, parts and so forth. You would keep the usual things in stock, but any unusual needs that come up, they just feed a design into the fabber, tell it how many they need, and walk away.
It kinda sounds like we're getting fabbers in LT
By the by, the term "reverse engineering" applies where you're taking an actual machine, sitting there on your workbench, and you're picking it apart trying to figure out how it was engineered.
You wouldn't need to "reverse engineer" a blueprint -- the blueprint IS the data you're trying to derive by the process of reverse engineering. See, the term is inapplicable there.
You want to be able to build this awesome, shiny, super-efficient thruster? Well, what you do is you unmount the thing, pull it apart piece by piece, carefully catalog the alloys it's made of, its dimensions, parts used, analyze its circuits, trace all the wires and connections, even take X-rays of the thing, etc, etc. You also would fire it up and test it, check its power output and so forth. Eventually you'd gather enough data about the thing that you could draw blueprints to build another one, and... voila! Reverse engineering accomplished.