Aperture Science Unstationary Scaffold

{{Technology Infobox
| image=FileTestchmb a 080004.jpg|250px
| name=Aperture Science Unstationary Scaffold
| affiliation=Aperture Science
| type=Moving platform
| usedby=Chell
| entity=N/A
| designer=
| hidei=
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{{Quote|Good. Now use the Aperture Science Unstationary Scaffold to reach the chamberlock.|GLaDOS|Portal|File03_part2_platform_activated-1.ogg}}

The '''Aperture Science Unstationary Scaffold''', also called the '''Track Platform''',''Perpetual Testing Initiative'' is a testing element featured in several Test Chambers of the Aperture Science Enrichment Center|Enrichment Center.


Moving along a blue ray similar to the one supporting the elevators that link separate Test Chambers, the Unstationary Scaffold is often used to safely progress above pools of Goo|toxic waste. It can be activated by sending an Aperture Science High Energy Pellet in its catcher, putting a Weighted Storage Cube on a 1500 Megawatt Aperture Science Heavy Duty Super-Colliding Super Button|Super Button, or redirecting a Thermal Discouragement Beam into a receptacle.

In ''Portal'', before the device starts itself, a mechanism lowers the platform towards the blue beam. Interestingly, the same platform is also included in the second variant of the Piston Platform|Victory Lift. Unstationary Scaffolds can also travel downwards, as seen in GLaDOS' testing track (Portal) Chamber 19|Chamber 19, where one of them lowers at an angle into the pit of fire.

Unstationary Scaffolds in ''Portal 2'' run on wall-mounted tracks, instead of the blue energy beam. Furthermore, these platforms can also move vertically. In older areas of the Enrichment Center ceiling-mounted Scaffolds can be seen.

As seen on FileBorealis plans 02.png|one of its blueprints, the ''Borealis (Aperture Science ship)|Borealis'' contains an Unstationary Scaffold.

==Behind the scenes==
According to Jeep Barnett, originally, the Scaffolds ran on electrified tracks. However, playtesters would hop along the rails to the exit, bypassing the puzzle entirely. The developers tried to solve this by killing players as soon as they touched the rails but that solution ended up being too much of an over correction, as even skilled playtesters were getting frustrated by these one-hit kills, in the more complex puzzles later in the game. Making the scaffolds run along immaterial beams of light solved both problems.''Portal'' commentary


FileUnstationary Scaffold diagram.jpg|Unstationary Scaffold diagram.
FileTestchmb08.jpg|Used to cross GLaDOS' testing track (Portal) Chamber 08|Test Chamber 08.
FileTestchmb11.jpg|Used in GLaDOS' testing track (Portal) Chamber 11|Test Chamber 11 to get the upgrade for the ASHPD.
FileTestchmb13.jpg|Used in GLaDOS' testing track (Portal) Chamber 13|Test Chamber 13, with a Weighted Storage Cube on it.
FileTestchmb19 signs.JPG|View from the last Scaffold used at the end of Test Chamber 19.
FileTestchmb19 furnace.JPG|The end of the last Scaffold's ray, ending in a deadly furnace.
FileBorealis plans 02.png|Unstationary Scaffold on the ''Borealis'' blueprint (misspelled as "Scafford").
FileAperture Science lift platform - scaffold.svg|Aperture Science logo as seen in the middle of an Unstationary Scaffold platform.

===''Portal 2''===

FileP2TC4_proto.JPG|In an early GLaDOS' testing track (Portal 2) Chamber 04|Test Chamber 04.
FileP2TC1.png|In GLaDOS' testing track (Portal 2) Chamber 01|Test Chamber 01, where it moves vertically.
FileScaffold in TC4.jpg|In the retail Test Chamber 04.
FileScaffold in WTC12.jpg|In GLaDOS' testing track (Portal 2) Chamber 12|Test Chamber 12 of Wheatley's testing track.
FileOld Unstationary Scaffold.jpg|20th century version.
FilePeti arm motionplatform.png|Aperture Science Unstationary Scaffold icon in ''Perpetual Testing Initiative''.

==List of appearances==

*''Portal'' {{1st}}
*''Half-Life 2 Episode Two'' {{C|''Borealis'' blueprints only}}
*''Portal First Slice''
*''Portal Still Alive'' {{Nc}}
*''Portal 2''
*''The Final Hours of Portal 2''
*''Peer Review''
* ''Perpetual Testing Initiative''
*''Lego Dimensions'' {{Nc}}


CategoryAperture Science technology
CategoryPortal 2
CategoryAperture Science testing elements