In this Instructable I'm going to show you how I went about building my very own life size talking Portal Turret from start to finish. This is a fairly in depth project that will cover every stage of construction and all the techniques I used along the way. Hopefully there will be a lot of information that you can pull out of this and use for all kinds of different projects.
For those that are unfamiliar with Portal, It is a fantastic puzzle game made by a studio called Valve that requires you to use two portals to solve all kinds of different puzzles. It is really a fantastic game. The turret for which this instructable is about is one of only two characters you interact with in the entire game, the other being GLaDOS. The central AI of the complex. The Turrets are so adorably deadly that I had to have one of my own. Since nobody makes them I had to build one myself. A little bit more work but definitely worth the effort. Lets get started.
Materials and Tools used are broken down for each section.
Step 1: To Scale Blueprints
The very first step in the project was deciding how big I wanted to make the turret. I got in touch with someone at Valve and they told me that the turrets in the game stand 58 inches tall. Due to the nature of the design, I decided that making one this size would be prohibitively problematic and very expensive. I decided a more reasonable height to undertake was about 36 inches. This also seemed like a great size to display it once it was finished. This way it wouldn't take up an enormous amount of space in my place.
I had a friend of mine, Tyler Garrison, who is a wiz with Illustrator whip me up a set of blueprints with a height of 38 inches to the top of the antennas. I then printed them out to scale and pulled all the measurements I would need from them as I worked through the project. My friend did an outstanding job adding in little extra details like the Aperture logo and other details on the blueprints. These blueprints will also make a great poster to hang on the wall with the finished project.