"What are the most common dangers with it?"

House explains, "Once it's stabilized, there's essentially no risk at all, it's entirely fail-safe, since even if more exmatter started flowing into the rift from outside, like if another rift was placed right next to it, the stabilization mechanisms will naturally scale to account for the increased exmatter flow. The only real danger is during the initial sparking of the rift, which is why we're waiting for all four of us to be here. The chance of the rift slipping out of number 1's control is already microscopic, but with all four of us here to catch it if something goes wrong, the chances are essentially nil."

"What'll happen if it does slip out of Number 1's control?"

"It'll continue expanding, though much more slowly. Then I and numbers 3 and 4 will quash it, and we'll start over."

"What happens if you don't quash it?"

"Well, I guess if no one does, then it would just keep growing forever." House gets a thoughtful look, and briefly glances over to Braid as they come to a collective decision, before turning back 5S. "I suppose if you're worried about this getting out of hand, maybe because the machines figure it out somehow and make the remarkably poor decision of trying to build a bomb out of a rift generator, we could share the info on how to suppress and reverse the growth of a rift with you? We don't have any information on how your own exmatter systems work, but you clearly must have some, so hopefully adapting it to the tools you have available should hopefully be possible."

"The machines are good at stealing technology, yeah - some of the most advanced units need to see a thing only once to come up with a counter. And they don't have self preservation coding. So information on suppressing that would be helpful."

"Paper again? It'll probably be smaller than the stack for the generator itself, since that contained a good chunk of the information already, this will mostly just be expanding further on the details of the exmatter infrastructure itself and maybe some speculation on how you could replicate it with what we've seen you all do so far."

"That works."

That's another stack of weird flexible pseudo-ceramic, with all the relevant information printed on it! It indicates that no, the exploratory team does not really understand how androids work, though they have figured out that they have some kind of weakly exmatter-active core inside them, and proposes that whatever technology is involved in that might be useful for repurposing into rift suppressors, since it is presumably already interfacing with exmatter in some way.

(This is actually more information on black boxes than she's been given before... Their function is a tightly held military secret, and it sparks curiosity in her, about what they do, where they're from, how they interface with this strange power...)

She'll scan, run her checks on what she's scanned, and securely upload the data. "Thanks."

House gives another smile at that. "It's pretty clear that a lot shit has hit a lot of fans since...whenever our creche was built,, at least, and plausibly before then as well. Hopefully we can help out once we work things out with Command and start properly building back up."

It's not too much longer after that, Steam and Doll make it back from their latest scouting excursion and the sparking process can begin!

One of the cubical structure's many ports opens up, revealing four circular slots, which each of the maybe-a-third-kind-of-alien puts a hand into. They all get a look of intense concentration for a couple minutes, and then there's a considerable, though only very brief, burst of maso from inside the cube, which then fades to a faint, intermittent emissions as the four pull their hands free. The shape of the generator, plus its gentle maso emissions, do give the appearance of something almost like an enormous black box.

The four of them didn't exactly look particularly stressed to start with, but with a source of exmatter established, a subtle tension between them has relaxed.

She has every sensor that she can at a time up, and flips rapidly through some auxiliary ones, watching intently. 

13B, on the other hand, is standing back, watching with a neutral expression (though also running some of the primary sensory arrays that most YoRHa have - especially a model like her - so 5S can focus on the more obscure ones).

To most sensors, the cube is just as it was before. Maso detectors can pick up a steady trickle coming from the surface of the generator. Over the following minutes, it also warms up a bit, according to both infrared and more esoteric sensors, though only a little bit warmer than it was before. Radio, microwave, UV, and X-ray spectra are all unchanged, penetrating sonar is picking up a slow, ongoing change in the sonic characteristics of the foam inside the generator, more than would be implied by the change in temperature, though entirely in accordance with the changes described in the documentation 5S scanned as resulting from the foam becoming saturated with 'exmatter'. Other sensors indicate broadly similar things, few to no exterior changes and internal changes conforming to expectations.

The four maybe-aliens have arranged themselves on four cushions near the generator, and Doll looks to the androids with a curious, and perhaps hopeful, look. "We're going to celebrate a bit, now that we've got a source of exmatter to refresh ourselves with. It's...something between playing a game together and entering an altered mental state. I'd guess you don't want to participate directly, especially since none of us are sure how it'd work with androids rather than humans, but I thought I'd ask anyway. Maybe we can loop you in on a sort of outer layer, so you can observe, if you're curious?"

"...I'm good."

"And I'm curious!"

Doll will go ahead and loop 5S in, then! It settles on her in a strange way, not receiving a data packet or encryption protocol, but almost more like a lens has been applied to her maso scanner suite. A small portion of the constant low-level maso buzz that's been going between the four maybe-aliens suddenly resolves into something coherent, a datastream that, after some more fiddling, appears to be...the informational silhouettes of copies of the four's minds, which meet and seem to fuse together, and then establishes individual datastreams with each of the four in addition to the broader communal datastream. From there, the exact mental state of each of the four wavers and shifts, first chaotically and then with growing purpose, like they're exploring the space of possible states and searching for one in specific.

(...They knew these guys weren't human. But this confirms it, in her mind.)

She examines and catalogues with an interested eye to learning what they're like.

It's not exactly a clear picture, but it certainly seems like it portrays more of their characters than the rest of their behavior. They certainly all seem deeply familiar with one another, their minds naturally fitting together into well-worn grooves. They have their roles to play, not just in terms of whatever formal ranks they bear but also in terms of their friendship.

Number 1 is definitely the leader, proud and used to making decisions, as being the shield under which the other three can shelter.

Number 2 is an advisor to number 1, but also a companion and support, whose knowledge forms a critical component of the foundation of her strength.

Numbers 3 and 4 are both slightly more accessory to the group, neither being as close to numbers 1 or 2 as the pair is internally, nor close with each other. Number 3 is used to moving fluidly between social groups, finding the gaps in the group's dynamics that he can fit himself into, while number 4 is more familiar with standing on her own, a strength similar in some ways to number 1's, though more self-contained.

It's good information, for someone like her. 

She settles back and waits for them to finish. 

It goes on for a while longer, maybe a couple hours, each of the four steadily zoning in on what seems to be their personal goal-state. Doll is first to reach it, and their silhouette turns to House's, the two of them working together to bring House to their own goal, before both go on to harmonize with Braid, and finally the three turn to Steam. From the moment Doll reached their goal, the entire 'game' was complete just a couple minutes later.

The four exit their trance soon after, all seeming...not exactly more cheerful, but maybe more confident.

It's fascinating to watch. 

After the celebration is complete, the team continues to laze about briefly in their mentally unified state, before eventually pulling back apart into individually distinct minds, Doll dissolving the psionic link (though now that 5S has experienced it, expanding her sensor suite to replicate the effect should be possible with some tinkering), then getting up off their cushions and packing them away into their capsule, and affixing the generation to some struts on the outside of the capsule.

Braid and House link back up, the resource extraction streams soon reappearing, though now instead of  feeding into formless piles they're instead constructing solid blocks, similar in size and shape to the generator's outer casing, before slotting onto the same sort of strut (or onto each other, once the capsule's struts are all full). Doll and Steam instead turn to the androids, and Doll speaks up again. "So, you mentioned this location not being very defensible. Would you be willing to help us scout out somewhere safer to move camp?"