Diagonal Corners for Business Card Cubes

To make a diagonal block to join across thiscorner, you’ll need six cards.

In addition, I’ve also got a bunch of spare normal cubeunits.

These will be to patch over sides that are loose.

Depending on what you’re building,you may either end up with loose sides that need to be covered, or you may be buildingadditional cubes on, so this will depend on the structure that you’re building.

So,the first two units are just normal cube cards.

These will go inside here to smooth over thesetwo surfaces, and it doesn’t matter what color they are, because they will be covered.

Thenyou’ll need to take two cards, line them up at the corners, and then open them up untilyou get a little exposed area here, keeping them square to each other.

And you have tokind of eyeball it.

For me, for these two inch by three-and-a-half inch cards, abouthalf an inch (1.

4 cm) has been working well for me, but you may need to experiment a bitto figure out exactly the distance that’s right for you.

So then, you’re going tofold over only the long sides of each of these.

So, the long side of this one goes over, thelong side of this one comes back.

Set those aside.

The last two will be folded in mirrorimage of each other, and they will be diagonals.

You’ll be folding a 45° angle here.

Foldone this way.

It’s a little hard to fold business cards like this.

This is why I’musing these cards instead of the read ones: because they’re a little softer and easierto work with.

So, it’s important that these are mirror images of each other.

Alright,now we’re ready to begin.

The first step is to cover over these flaps with smoothingcards.

This goes into this notch here, and this goes under the tabs at the top.

The othersmoothing card slots in here and here.

Next, take one of these L-shaped pieces.

On thesides of your L, you’ll have flaps running perpendicular to it, and flaps running parallelto it, if that makes sense.

In the parallel ones, slot this in—the long side goes in.

It will overlap a bit, and depending on where this is in your model, you may end up wantingto trim about half an inch, maybe a little bit more, off the bottom of your long sideof these L-shaped cards.

Or you can get it to slot in.

It’s a little hard to forcethis—if there are other cards built up around here—it’s a little hard to force thisin between them, so you can either dismantle some of the cards to get it in and then rebuildthem, or build them in the right order so that you’ve done this first, or do whatI’ve been doing and just trim off the bottom.

The other L-shaped card is going to go in,and end up shaped like this.

It slides in under this smoothing card.

You may end upwanting to put it in before the smoothing card.

In fact, that’s what I’ll do.

Removethe smoothing card, slide [the L-shaped piece] in.

And again, if this were in some hard-to-reachpart of the model, you might just want to trim off the bottom edge of this L-shapedcard.

In this case, I have access, and I can just wiggle it a little bit until it slidesin between these two cubes.

This is also easier with thinner or shinier cards.

There we go.

Line it up so that the bend in the card lines up right with the edge here.

Put this smoothingcard back on.

Next, we take the two cards.

Now, how do we know which side to put whichone on? Next to the space that we’re trying to fill, we have some flaps with a gap thatcomes up to meet the place we’re trying to fill, and we have flaps that don’t comeup to meet it.

We want to use the ones that are coming up to meet it.

So, you figure outwhich one of your two angle cards fits down into that slot with its flap facing in.

Andthat’s where you put it.

This slides down into here, right until the point about atthe top.

And then the other one will just go in mirror on the other side.

Closing theseup is a little like closing a cardboard box.

You need to weave them together.

And thenthe point—you can fiddle with how you want the point.

It will work in a couple of differentways.

That is the basic structure.

Depending on what you’re doing, there might be anothercube here, or if this is going to be an outside edge, you will want to smooth this over becausethere’s a little bit of force on those flaps, wanting to push them open, so those want toget flattened down.

This here should get flattened down.

And the other really important one isthe top one.

Anything where there are now extra cards slid under should be flattened.

And there is your diagonal joiner.

You can use this to make shapes like this.

You cansee, I’ve taken this, built out a cube and here, and then joined them up into an octagon,and then done that in all three dimensions.

This is a sort of ball.

And it’s quite sturdy.

These edge connections hold together pretty well.

This is not the only way to do diagonals,but it’s the one I know the best, and the one that I prefer to use.