Step 5: Adding the Edges

Prepare the 20 edge parts as seen on the picture. Fold the flaps inside and sew along the edge, that the (nice) dotted twine-line is on the outside and the (ugly) thick line is on the inside.

Now you need 4 pairs and 4 trios.
I will begin with the trios. Sew them together as you did with the cube-covering - inverted (leather facing leather), fixing with staples, cutting the edge away, turn inside-out.
When you now lay the edge on the edge of the cube, you will notice that it looks kind of creepy, because it lacks of depth.
So take a bit of twine and sew the 3 parts a bit under the edges with 3 single knots together (Hard to describe, just take a look at the picture). This avoids that the edges are laying flat on the cube.

After you have finished the edge, take 3 styrofoam triangles and fix them on one of the 4 top edges with double-sided tape or glue. They will fill the edge and make them more fluffy.
Now you need to put a generous portion of glue on the inner side of the trio along the twine-line and fix it on the cube. Not all glues are suitable for holding leather together.

Same procedure with the pairs of edge-triangles. These go to the 4 bottom edges of the cube. On the bottom plate, they can be fixed with the strong stapler (see picture).

Now you can prepare the 12 center parts. First you have to sew the flaps on the inside, all around the shape, and then glue it to the right place. It is probably no surprise that the 4 halves go to the bottom edges of the cube.
<p>Love this Instructable! Definitely going to try to do one. Still, I'm just a bit miffed that you didn't spell Zen like the universe in Half-Life, Xen. Otherwise, an amazing Insturctable. Can't wait to get started!</p>
<p>It took me so much time to do this ! Gosh, didn't think it would be so long. But i'm pretty proud of it ! Not as perfect as the tutorial, but I find mine more cute :-D thanks for the tutorial.</p>
Hi, this is great ! I'm trying to find the components atm, but I struggle to find &quot;styrofoam&quot;, I don't know where to search. Any advices ? protip : I live in France.
Thanks! This does not have to be necessarily styrofoam, it can be anything between soft and hard, like seat padding or a few layers of flat insulation material used for windows or something like that.
Too bad the cake is a lie otherwise I would've had a portal-themed party with these :D
Just have one with pie, thats real.
The pie is a lie, the cake is a fake.
Have you finished the game dude :O I saw the cake its there man!
where would you find a sitting cube?<br>would an ikea have one?
If you don;t mind paying a little bit more for the project you can purchase uncovered foam ottomans from fabric stores.
What ever you do dont kill it D= <br> <br>Looks epic! I cant wait to try and make it myself. <br>Where did you get the leather?
such a cool idea, I love it!
Very good, how squishy is it?
As squishy as it can be for 5&euro; :D But squishy enough to be comforting ;)
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This is fantastic! I'm definitely going to be making one of these! Must find a cube!!!
okay I'm inpressed
I have a strange need to incinerate it.
GLaDOS would be proud.
:D Oh my goodness, this is amazing!
Great Instructable! Now I'm thinking of of a future project utilizing the <a href="http://media.photobucket.com/image/hellraiser%20cube/iriealaskan/printable-cube.gif" rel="nofollow">Hellraiser Cube</a>!<br> <br> &quot;<em>We have such sights to show you!</em>&quot;
Nice! And while thinking about Portal 2, i just re-moisturized the drool-puddle at my desk...
Another excellent portal project! Thanks for adding the templates and everything! Perhaps adding a second picture to the intro or final steps with some sat on said cube?

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