ClockWork City: Machine District

[3,14+M.E.N:T:.A]

i'm doing that robot to put in to your house. The problem is that i can't get the last part. It's inside the machine district but the door is always locked. Do you know how can i go inside this part?? I've already tryied all quest that i found in the city.

[Frosty]

You did CWC storyline? It unlocks during one of quest