U-Invent



U-Invent stations allow you to craft new items from the odds and ends you find throughout Rapture. Despite the name, you do not "invent" anything. You are presented with a list of items which can be crafted at the machine and the components needed to craft each item. When you point to an item, it also shows you how many of the required components you have.

Availability
Starting with Arcadia, the player begins finding various new items when looting and searching, as well as finding the first U-Invent machine for using these items. Popular items include Automatic Hack Toola and Exploding Buck. Some new tonics may also be crafted. As the game progresses, more items become available. Most of the items from a U-invent are either extraordinarily rare or not present anywhere else in the game world.

Invention Components

 * Alcohol
 * Brass Tube
 * Chlorophyll Solution
 * Distilled Water
 * Empty Hypo
 * Enzyme Sample
 * Glue
 * Kerosene
 * Rubber Hose
 * Screw
 * Shell Casing

Component Management
Some components are more easily found than others, and that may vary in each playing of the game. For example, Electric Gel is an extremely powerful chemical agent for taking down Big Daddies. You can find a little of it around, but you will have to make the vast majority of what you need. In this case, you should know what components it requires and make subsequent choices accordingly:


 * If another item requires the same components and the component is limited, you may choose to do without the less needed item and save the components.


 * If you search for loot and are offered items you already have a lot of or that you know you just do not need (such as an Empty Hypo after you have gotten all the tonics), then use Scrounger to try for something else.
 * Sometimes it is good to know how much of something you have so you don't over stock on it and the items come out of the vending machine and are unusable because you are maxed out.

Reducing Requirements
The number of components required to create a component may be reduced in three ways:
 * Hacking the U-Invent machine
 * Getting and equipping the Prolific Inventor and Clever Inventor gene tonics.

Ammunition

 * Antipersonnel Pistol Rounds x6
 * 2 Rubber Hose
 * 3 Shell Casing
 * 1 Screw
 * Armor-Piercing Auto Rounds x20
 * 2 Kerosene
 * 1 Brass Tube
 * 3 Shell Casing
 * Electric Gel x25
 * 1 Alcohol
 * 3 Distilled Water
 * 2 Battery
 * Exploding Buck x3
 * 3 Kerosene
 * 2 Shell Casing
 * 1 Screw
 * Heat-Seeking RPG x2
 * 3 Distilled Water
 * 2 Kerosene
 * 1 Brass Tube
 * Trap Bolt x6
 * 1 Alcohol
 * 3 Distilled Water
 * 2 Battery

Gene Tonics

 * Bloodlust
 * 3 Empty Hypo
 * 4 Enzyme Sample
 * 5 Glue
 * Booze Hound
 * 3 Empty Hypo
 * 4 Enzyme Sample
 * 5 Glue
 * Hacker's Delight 2
 * 3 Empty Hypo
 * 4 Enzyme Sample
 * 5 Alcohol

Items

 * Automatic Hack Tool x1
 * 1 Brass Tube
 * 4 Battery
 * 4 Rubber Hose
 * Lazarus Vector x1
 * 7 Chlorophyll Solution
 * 7 Distilled Water
 * 7 Enzyme Sample