It’s the lovable Sentry Turret from the hit PC/Xbox/PS3 game, Portal! Since its original release on my deviantArt page some time ago, I've received a number of requests for help/tutorials with this model, and in the spirit of the Make It Real challenge, I've decided to write up a concise guide to that end.

For those curious, this model was designed using several pieces of software, including student versions of 3D Studio Max and AutoCAD for the mesh, GIMP for the model’s skin, and PePaKuRa Designer to “unfold” it into the final template. PLEASE NOTE, you do not actually need any of these programs to assemble the template in this instructable.

While I will do my best to guide you through the assembly, parts of this model can be difficult for beginners; namely the legs, which are the smallest and most intricate part.

>  The 2-page template (PDF) attached below
>  Your preference of cutting implement (i.e. scissors, a pen-knife, etc.)
>  Paper (I would recommend 16-20lbs (60-75gsm) paper, i.e. typical copy/printer paper)
>  Glue
>  Patience, time, and dexterous fingers
OPTIONAL - PePaKuRa model file (.PDO) attached below *

* Only for those who already know how to use the program PePaKuRa; while it is a very useful tool, I will not be explaining its use in this guide.

Step 1: Getting Started

Once you’ve printed out the PDF template listed on the main page, you’ll need to cutout the pieces (photo #1). You can do this in sections or all at once, whatever your preference. The pieces are not interchangeable, however, so if you choose to do them all at once, be careful not to mix them up.

This step is optional, and my recommendation varies depending on your personal building experience. For beginners, I recommend making all folds; this will help greatly in the assembly. For those of you with a little more building experience, assembling the model unfolded will soften the model's edges, giving it a much smoother and realistic look. For the purposes of this tutorial, all folds have been made.

There are two (2) types of fold lines: mountain lines and valley lines (photo #2). Once folded, your pieces should look like they do in photo #3. Note that both the lines separating the tabs from the rest of the piece should be folded, too.
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>I think - er - you - did it!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
<p>idid it i did it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</p>
My lil' bro gonna make this!
did you, you know, actually read the instructions...? i couldn't have possibly gone into more detail...
Is there any way to make the final product more glossy, like in the game?
you could try using photo paper, let me know how it turns out!
Thanks for posting this! I made this for my brother-in-law's birthday. The result was impressive, and he loved it. It took a LONG time to make, and at the last moment I had to run out and get another copy of the PDF because I messed up one of the doors. But in the end it was pretty awesome. I'm in awe of the talent it took to design it! The only complaint I have is that the gun turrets have little attachment points on both ends in your photo, but not on the printed PDF. <br> <br>I also printed this as a birthday card for him: https://twitter.com/i/#!/Shereebedee/media/slideshow?url=pic.twitter.com%2FvB7PhgI <br> <br>Thanks again!
Hot link for the card:<br> <br> <a href="https://twitter.com/i/#!/Shereebedee/media/slideshow?url=pic.twitter.com%2FvB7PhgI" rel="nofollow">https://twitter.com/i/#!/Shereebedee/media/slideshow?url=pic.twitter.com%2FvB7PhgI</a>
Congratulations on being one of the winners in Scoochmaroo Papercraft Challenge!! BTW I just saw your user picture, I LOVE that cartoon! &quot;For the love of god and all that his holy my anus is bleeding!!!&quot; Oh memories!
Hah thanks! Yeaa, that one's deff of my all-time favorite videos
Awesome! This looks fantastic!
Very good job! You should also enter it in this contest: <a href="http://www.instructables.com/id/Scoochmaroo-Challenge-Papercraft/" rel="nofollow">http://www.instructables.com/id/Scoochmaroo-Challenge-Papercraft/</a>
Thanks for the heads up! I may just do that

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