Robot workbench

The robot workbench is a world object in the Fallout 4 add-on Automatron. It is used to modify robot companions by equipping them with various robot mods, including Codsworth and Ada.

Crafting
The robot workbench, unlike other workbenches, appears in the "Special" category of the workshop menu, and doesn't require Local Leader rank two to construct at a settlement.

The robot workbench is by far the largest crafting station in the game both in width and in height. Rooms in player-built houses are usually not high enough to accomodate the workbench, but placing it inside a building is ill-advised anyway because some automatrons (Sentry Bots in particular) are too large to navigate enclosed spaces, much less fit through human-sized doors. While this problem can be circumvented by ordering the automatron to follow the Sole Survivor as a companion and wait for it to teleport to its master's side when the distance grows too long, it is far more convenient to just build the workbench outside.

Robot construction options
Players can choose components from a total of five different robot models:
 * Mister Handy
 * Protectron
 * Assaultron
 * Robobrain
 * Sentry bot

Robots constructed at the robot workbench are labelled "Automatron-XXX" by default, with XXX being a randomly generated number, but can be renamed like any weapon or piece of armor.

Constructing an automatron encompasses choices in seven categories. An eighth category, "Special Mods", is only relevant for the Automatron questline and plays no role for the construction of generic robots. A list of mods for robot companions Automatron robot mods
 * Head
 * Torso
 * Left Arm
 * Right Arm
 * Legs
 * Voice
 * Paint

Robot parts can be freely mixed with almost no restrictions, thus enabling the player to create highly unusual but very deadly combinations. As an example, a Mister Handy torso and thruster assembly including a Tesla field and three buzzsaw-equipped appendages, combined with Sentry Bot arms wielding Gatling lasers and decked out in voltaic armor plating, results in an automatron that can single-handedly massacre entire hostile strongholds at range without needing ammunition, will devastate almost anything foolish enough to enter melee range, can move at impressive speed, can carry more than most organic companion and is small enough to accompany its master everywhere.

When building a robot the head and both arms are optional - an automatron can be finished without them, although in such a case it will usually be lacking means of inflicting damage or interacting with its surroundings, as demonstrated by the Bosun aboard the USS Constitution.