At that Sans' mind blanked. No. No way. "um... yeah i'm not gonna let you do that to yourself kid. that machine hasn't been used in who knows how long, and even if you can figure out how to work it, it's never been used on, uh... [I]living[/I] humans before."

The way Frisk always seemed so neutral about everything, Sans had no idea if he was getting through to the kid. "i'm not gonna let you kill yourself kid."

[hr]
[color=9e0b0f]"Wouldn't you need like, a time machine or something like that? What's the DT Extractor gonna do to 'pierce the veil'? While I don't think it'll kill you, I don't think this'll have the effect you want it to either."[/color] Chara sighed as they finished speaking. Frisk obviously wasn't going to leave without trying, and honestly Chara wanted them to try. If this weakened Frisk enough, Chara could take over. 

It's never too late to destroy everything.

[hr]
Gaster wasn't sure what to think. He'd been trying to get himself out of the void for years, but he'd never been able to because... well, it didn't really matter at the moment. Frisk was onto something, but Sans was refusing to look past the potential risks while Chara, who Gaster had just noticed was there, simply lacked the knowledge to see what Frisk was seeing. While the DT Extractor's main purpose was for the study of the human SOUL in the first place, it was also the only precursor to Gaster's own teleportation/time machine because of the inherent ties between Determination and time itself. The DT Extractor is, in a way, a prototype of the very machine that caused his exile to the void, and could be his way out. 

Gaster went over to the console, half covered in dust from the years of non-use, and started messing with the calibrations and settings. If Sans wasn't going to help Frisk, he would. The machine started to him quietly as he turned on the main power, also turning on the unnaturally bright fluorescent lights in the room. There was no way to know yet if they would run into the same problem here as he always had in his own, he could only hope that it wouldn't be a problem.