The Sink

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Icon disambig
For an actual sink, see Fallout 3 and New Vegas miscellaneous world objects.
For the artificial intelligence personality in The Sink, see Sink (computer).
Gametitle-FNV OWB
Gametitle-FNV OWB

The Sink is a part of the Big MT in the Fallout: New Vegas add-on Old World Blues. Located at the top of the Big MT dome, it provides housing to the Courier.


Originally owned by Mobius, The Sink served as a test bed for several personality subroutines. Mobius removed the personality chips, disabling many of the various functions of its modules. As the player continues with the story, they can find the backup holotapes, making the modules fully functional.


The Sink consists of five rooms connected to a central hub containing the Sink Central Intelligence Unit, Book Chute and the Sink Auto-Doc. It contains a workbench and a reloading bench with a crate beside it, and locker above each of them. The main entrance foyer contains both a Nuka-Cola vending machine and a Sunset Sarsaparilla vending machine along with exits to The Think Tank and Big MT. A small agricultural room contains a refrigerator, electric hot plate, the Biological research station, and space for growing plants. A large living room consists of a couch and table overlooking a large screen displaying a loop of the Old World Blues opening slideshow. Toaster sits on a table in the corner alongside Light Switch 01 which is mounted on the wall. The bedroom is equipped with a queen sized bed, a set of lockers, chest, footlocker, safe, and several shelves. Additionally, Muggy's original spawn location is in the corner and Light Switch 02 is located here to the left of the door leading to the living room. Behind a door, initially locked at the beginning of Old World Blues, sits a set of tanks that hold the Courier's brain, spine, and heart if they are currently removed.


The Sink can be upgraded by finding back-up personality holotapes scattered around the Big MT. Many appliances are available for reactivation and upgrading, including:

Sink Auto-Doc

Main article: Sink Auto-Doc

The Auto-Doc in the Sink is a far superior model to other Auto-Docs, because of its multiple functions. It is the only object that offers cosmetic surgery to the Courier and offers several, although pricey, implants after finding them in the Big MT. The Auto-Doc can also heal you fully, including removing all radiation and addictions. It can also restyle your hair, being the only other non-player character that can apart from Sergio.

Biological research station

The Biological research station is the mojo mac-daddy of all things agricultural. It has the ability to clone any dried plants found in Seed Bags in the Big Empty, and also can process other plant matter into salient green, the green goo that can create most plants when accessed at a campfire or hotplate.

Blind Diode Jefferson

Main article: Blind Diode Jefferson

The music-less jukebox in the Sink is the upgrade hub of all things pertaining to the sonic emitter. After finding holotapes with certain frequencies in the Big Empty, Jefferson can tune any sonic emitter to that frequency, giving the pistol different and unique properties.

Book Chute

Main article: Book Chute

The Book Chute is a Communist-hating destroyer of knowledge. It plans to destroy all things that resemble knowledge, and all things which might aid in independent thought, such as pencils. After its upgrades, it can break down any pre-War book, clean or destroyed, into blank books. It can also break pencils into lead and scrap metal, as well as clipboards into duct tape and scrap metal.

Light Switch 01

Main article: Light Switch 01

Light Switch 01 is found in the room next to the Toaster, and has a more laid back personality than Light Switch 02. Its second upgrade provides the option for lighting that raises Intelligence, Science and Repair skills for twelve hours after exposure.

Light Switch 02

Main article: Light Switch 02

Light Switch 02 is located in the Bedroom area and possesses an expressed hatred towards Light Switch 01 for its professed superiority of larger processors. Its upgrade provides the option for lighting that raises Charisma, Barter, and Speech for twelve hours after exposure.


Main article: Muggy

This miniature Securitron has an addiction to all things relating to dishware, cups, and especially mugs. Its second upgrade allows it to create a small supply of energy cells, scrap electronics and other things once every day.


Main article: Sink (robot)

The actual, water basin-associated sink in the Sink is a germiphobe that acts as a source of clean water, and after being upgraded, can fill up any empty bottle (Empty Nuka-Cola bottle, Milk bottle, etc.) with water turning it into purified water.

Sink Central Intelligence Unit

The Central Intelligence Unit acts as the hub for all the appliances in the Sink. It can turn on or off the personalities in the area, leaving them to function in a quieter state. It also acts as the snobbish merchant and repairer of goods and sells certain mods for weapons after their holotapes are found. It does restock items like other merchants, although only after three days inside the Big MT.


An evil toaster with aspirations of a second Armageddon which can turn plain Saturnite fists into the Saturnite fist super-heated. It can also rip apart other small appliances such as cameras, irons, hot plates, and even other toasters, into their basic components, acting as a source of energy cells and scrap materials for the work bench or reloading bench.


  • After meeting with Dr. Klein and the other researchers, The Sink becomes a home for the player and can be upgraded with holotapes found throughout the Big MT.
  • The music that plays while you're in The Sink is the Lost Hills theme of Fallout (named "Metallic Monks" in the Fallout soundtrack), which is the same music that can be heard at The Strip North Gate.
  • All storage containers are safe to store equipment.
  • There are storage cabinets mounted in the walls above the crafting and reloading benches containing some basic components. These are horizontal and very easy to miss.
  • There is a map in the central room that shows most of the locations in the Big MT; remarkably similar to the one seen near the end of Fallout 3 while searching for the G.E.C.K. showing the locations of all the vaults in the D.C. area.
  • There is a chart on the wall displaying all upgrades made to the stealth suit Mk II.
  • In the Sink bedroom, there is a Securitron blueprint above Muggy's original position and a movie poster for "RALPHIE," which depicts an eyebot on a similar long journey to that of ED-E's.
  • The player can find a dead Followers doctor at the base of the tower, wearing a Followers lab coat and carrying some stimpaks.
  • The force field in front of the balcony can be disabled by shooting it with an upgraded sonic emitter, but the player still cannot climb or jump off the balcony onto the roofs below. It is difficult but occasionally possible to snipe from the balcony.
  • The player can sometimes see lobotomites moving around on the ground below, but it is extremely difficult to shoot at them. Despite its appearance, the balcony railing blocks bullets, and it is almost impossible to get high enough to shoot over the railing unless you jump and shoot while in the air. Because of its curving trajectory, a grenade launcher will be more effective here.
  • The Brain Tank's name will turn red when in sneak mode as if one was about to pickpocket an non-player character. This can happen even when your brain is not present in the tank.
  • The Sink can become a very useful home for players that have completed the add-on's quest line and have upgraded the sink fully. The Big Mountain Transportalponder!, the teleportation device you receive at the end of the quest line, beams you directly to the entrance to the sink, so you can very easily transport there as you would to a normal home in the Mojave. In addition, the Transportalponder works no matter how overloaded you are, like the radar fence around Big MT. Perhaps most important of all, the Auto-doc in the sink can heal you fully, get rid of all radiation, broken bones, and addictions at once, free of charge, as much as you want, making it very useful. (This has an effect similar to the housing improvement My First Infirmary for player housing in Fallout 3).
  • One of the disadvantages for having this as the player's main base is that if the player has any companions, they will have to be dismissed every time the player decides to use the transportalponder. This can become a hassle as the player then has to go and tell the companions to follow him/her again.


The Sink appears only in the Fallout: New Vegas add-on Old World Blues.


  • pcIcon pc The game may crash upon ending the initial conversation with the Sink Central Intelligence Unit, making it impossible to begin the quest All My Friends Have Off Switches.
  • pcIcon pc At some point in the game, the Sink CIU won't refresh its shop inventory and caps and the Biological Research Station won't respawn plants for harvest even after three in-game days. The unofficial fix can be downloaded here:
  • ps3Icon ps3 The force field on the balcony is not present even at the beginning of the add-on.
  • ps3Icon ps3 When entering the Sink, the two white horsenettle plants can be seen falling from the ceiling down through the planter and through the floor over and over. Also, the plants can only be harvested once. The plants may be harvestable again after completing Old World Blues, returning to the Mojave, and then returning to Big MT.
  • pcIcon pc ps3Icon ps3 xbox360Icon xbox360 The CIU in the sink does not always give you the caps for the items that you sell. It is recommended that the player save before any transactions so that they do not lose the items to the CIU.
  • xbox360Icon xbox360 In the bedroom, on the right side of the bed, if you drop an item such as a cup, it will roll 'into' the ground and re-emerge in between the workbench and the exit to the observation area.
  • xbox360Icon xbox360 When throwing a proton throwing axe or a proton inversal throwing axe anywhere in the Sink, sparks appear out of the wall right behind the workbench.
  • ps3Icon ps3 xbox360Icon xbox360The CIU has a 32,000 cap's level glitch. If you let its caps total get above 32,000 it will not let this total go below that level. It will still accept anything you sell it but will not give you caps if it will take the caps total below 32,000. It will also do this at 64,000. Use the Buy/Sell trick with a broken and a perfect item to get around this.
  • pcIcon pc ps3Icon ps3 Some miscellaneous items when dropped in the Sink will become invisible.


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