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"To try and make this course more exciting, I asked the Reassembly Machine to not reassemble you. He refused. I understand, that would be like asking me not to test."

The Reassembly Machine disassembles and reassembles ATLAS and P-body at the beginning and end of each test chamber, respectively.


At the end of most test chambers, the robots are disassembled in order to be transported to a new chamber through the pneumatic pulls of the Pipe Network. After the components of ATLAS and P-body arrive at a destination set by GLaDOS, they are reassembled.

Occasionally, when one or both of the robots are destroyed during testing, GLaDOS comments on how the Reassembly Machine has better things to do then to constantly reassemble the duo.


  • Despite the community believing the Reassembly Machine and the "disassembly" machine are two different things, they are not. The arms inside the Reassembly Machine can be tasked to either disassemble or reassemble ATLAS and P-body. This is proven when the Reassembly Machine was seen in the intro video of Calibration Course and later the same machine was repurposed to disassemble the two, ultimately proving that the Reassembly Machine would be building the bots off-screen (seconds before they are spawned).
  • It is possible that the Reassembly Machine can be used to make other testing elements, as it was never observed exactly how a Weighted Storage Cube was built.
  • This is further supported by a similar mechanism used to build Turrets in the Turret Manufacturing area.

List of appearances[]