Giant Fan (Portal 2)

The Giant Fan is a BTS (Behind the scene) decoration Used in the co-op built in to the game. The fan in the game is purely decorative and, is used to "push a lot of air". Use the fan with Pneumatic diversity vent, Maintenance lifts, catwalks, and test chambers for the BTS Scene.

Creating a Giant Fan Step 1

1. select the new brush tool, on the toolbar on your right change Cube --> Cylinder using the drop down menu. Next set the Number below that, to 18.

The brush toolbar

Creating a Giant Fan Step 2

(Remember: this is in units)

2. Next draw a 1056 x 1056 cylinder, make it at Least; 220 thick.

The cylinder

Creating a Giant Fan Step 3

3. Push it into the wall that you want to put a fan in, the top should be flush with the wall. Right click and press carve.

Creating a Giant Fan Step 4

4. place down three props; Three static, one dynamic. the dynamic will be the fan itself, search "Fan" in the Model browser, it is the white one. The other two parts will be the fan rims, and supports. position these in a way that you see fit.

Creating a Giant Fan Step 5

5. The giant Fan can be vertical or horizontal, create a small 10 x 10 brush, (Nodraw texture), and press Ctrl + T. This will change to a entity, select Prop_Rotating. In the flags tab, check the axis box that corresponds to your fan direction. x -> horizontal y/z for vertical. Name this entity.

Creating a Giant Fan Step 6

Parent the prop dynamic, to the prop rotating. This will cause the fan to rotate In game. place a ambient generic right next to your fan, select the fan sound that you like. In the flags section, uncheck: start silent, and the Not repeat boxes.