MOMENTUM CONSERVER

You have to invent the momentum conserver with the robot. You have to have some types of metals to do so. I think is any type of metal for the momentum conserver. You have the task of asking for metals from your co-workers on the job or you can dig up metals http://sims-online.com/sims-4-scientist-career-guide-active/

I literally just figured this out. when you click on the big(ish) robot inventing machine it should say "Invent Device..." click on that and it should have the "Momentum Conserver". once you click on that, your sim will start inventing it.

Thanks for sharing :D Closing thread as it's been necro'd.