This may not be feasible, but as an added tool to building with voxels directly, would it be possible to implement a CAD-like program to design parts that can be fabricated and then added to a construct? It would be a lot 3d printing parts to a larger machine.
As a potential side benefit, if this program were both integrated in game and avaliable outside of it, this could lead to users having the ability to work on blueprints and calculate resource costs any time with pretty great accuracy.
Teamcenter has developed solutions for networking Creo designs that may be helpful to take a look at if you're interested:
https://www.plm.automation.siemens.com/global/en/products/collaboration/creo-plm.html
