This is along the lines of my idea for modular space exploration probes...I put a brief abstract here on my site [wp.mhunt.click]. The basic idea is a space-based 3-d printer that also brings along the unprintable probe parts and electronics, and can print out the body of the probes per mission criteria. Also, the electronic packages are in a modular system so we can send out "refuels" of unprintable parts on regular basis so the system can keep on exploring with minimal human interaction for many years.