Introduction: K'NEX Motorized AT-AT From Star Wars

Picture of K'NEX Motorized AT-AT From Star Wars

"Fire at target with Maximum Firepower!"

- General Veers

In this Instructable I will show you how to make the All Terrain Armoured Transport (AT-AT) from the Star Wars universe! The AT-AT is a walking vehicle used in assaults. Due to its strong armour it can take many hits. In the movie Wedge takes one of them down, with help of the harpoon on the Snowspeeder. I've long wanted to build this model, but wasn't sure if I could get the walking mechanism right. Luke destroys one with a detonator.

This model is about 45 cm high, 9 cm wide and 50 cm long. It comes with motor, gears and movable Laser cannons in the head. The model took me about 1 week to build and 10 hours of video shooting and editing.

The steps are like this:

  1. Parts Needed
  2. Walking Mechanism
  3. Building the Head
  4. Adding the Head & Armour
  5. Building & Adding the Legs

Here you can see a video of the model, together with my Snowspeeder:

Step 1: Parts Needed

Picture of Parts Needed

Individual K'NEX pieces can be bought at:

  • KnexUserGroup (UK)
  • KnexSpares (UK)
  • (USA, very limited selection)

Parts required to build this model


  • 110x Black rod (16 mm)
  • 94x Silver rod (32 mm)
  • 13x Blue rod (54 mm)
  • 3x Dark Grey rod (86 mm)


  • 1x 8-way connector Black
  • 6x 7-way 3D connector Blue
  • 86x 4-way 3D connector Silver
  • 49x 5-way connector Grey
  • 21x 3-way connector Dark Grey
  • 7x 2-way (long shape) connector Brown
  • 14x 2-way (V-shape) connector Grey


  • 54x Clip with hole end (1-way connector)
  • 56x Clip with rod end Black (Y-clip)
  • 9x Clip with rod end Silver (Y-clip)
  • 6x Hinge part Black
  • 13x Clip Ball end Black
  • 3x Clip Socket end Black
  • 9x Interlocking pin Tan/Bronze
  • 14x Clip Blue


  • 1x (!) Wheel open Centre Black (25 mm) (! not on Image !)
  • 7x Hub/Pulley small (37 mm)
  • 4x Hub Racing wheel (37 mm)
  • 4x Hub Racing wheel (50 mm)


  • 3x Gear small Dark Grey
  • 3x Gear small Blue
  • 3x Crown gear Silver


  • 10x Silver tri mini
  • 2x Silver tri small
  • 2x Silver Square small


  • 1x Elastic Band 1 cm / 1/4" Diameter
  • 20x Blue Spacer (½ width)
  • 4x Silver Spacer (1½ width)

Step 2: Walking Mechanism

Picture of Walking Mechanism

In this step, you will build the Walking Mechanism of the AT-AT. You build two sides that hold the Gears within, then you attach the ex-centric rods that make the legs move and walk.

Making this thing walk isn't easy. Even after building it, it took a long tweaking time to get it right. Better walkers can be made, if theming isn't important.

In the next step, you build the head.

Step 3: Building the Head

Picture of Building the Head

In this step you will build the laser cannons hanging below the head, then you add the neck, sides (plus cannons), visor and the top. This can be opened

The head was the second thing I made. It was pretty hard to get that visor right, since it's iconic and looks "evil". It gives the AT-AT its fear-factor. The cannons can be swiveld by hand.

In the next step, the head will be attached to the body.

Step 4: Adding the Head and Armour

Picture of Adding the Head and Armour

First you'll add the head to the body. I had trouble finding out how I could do this, because the space is tight because of the walking mechanism that moves in this area. Then you add the top, and side armour. I needed two iterations for that.

In the next and last step you make the legs and attach them to finish your AT-AT!

Step 5: Making & Adding the Legs

Picture of Making & Adding the Legs

In this step, you'll build 1 foot, which you should copy 3 more times. Then you will make the lower part. These are all exact copies. The upper part has 2 versions, left and right. But there final legs are unique. Pay close attention!

If you have trouble, you can always ask me in the comment section. I'm glad to help.

Once you've finished making the legs, you attach them in a unique way that I discovered. It uses "Y-clips" and makes it possible to keep the width of the AT-AT as slim as possible. If the legs are attached, you're ready to test it! You might need to tweak the gears so that the walking pattern becomes good.

I hope you've enjoyed reading or building my model. If you do, leave a comment!

May the Force be with you!



José AndrésP1 (author)2017-11-29

Hola Amigo, que gran trabajo!!!!

Me entuciasma mucho hacer este proycto, sin embargo busque las piezas en las pagias que recomendaste y la mayoria estan agotadas. existe la posibilidad de conseguirlas en alguna otra pagina o vendedor.

Saludos desde Colombia.

GWorks (author)José AndrésP12017-11-30

Hola José, gracias por tu comentario :)

Uy, me parece difícil encontrar los piezas de k'nex allá. Estoy pensando en vender los modelos (como un set) con piezas que ya tengo y que son más fáciles para mi para comprar. Pero aún no he realizado algo así.
Así podría enviarte un set completo. Solo, las piezas no son barato y el envio desde holanda tampoco :(

Siempre puedes buscar en Amazon y Ebay. Quizá puedes conseguir un set con piezas metálicas en MercadoLibre. (Temas ISS o MechWarrior)

Me gustaría ayudarte en una forma. Hazme saber que piensas y si conseguiste algo en esas paginas.

Saludos también, amigo

Zombiekiller-93 (author)2016-08-15

Looking forward to seeing this again as shown in the trailer for Rouge One

GWorks (author)Zombiekiller-932016-08-15

Yeah the AT-AT's look good in the trailer. I hope they'll 'win', just like in the battle of Hoth. Perhaps we will hear how the name's pronounced. It appears that "@, @" is the correct pronounciation, but I still call them "Ah-tee-ah-tee's" myself.

Have fun watching Rogue One, I don't think I'll have the opportunity to see it.

Ethan1023 (author)GWorks2017-05-11

Exactly, right? I mean, the part about pronunciation. You know, funny thing, I checked them up, they're actually called AT-ACTs, not AT-ATs. It stands for All Terrain Armoured Cargo Transport.

GWorks (author)Ethan10232017-05-12

Yes, but check the date of that comment, it was before the movie was launched: I didn't know what they were :)

Zombiekiller-93 (author)GWorks2016-08-15

It be on DVD if you don't get the opportunity, are you building a death star

GWorks (author)Zombiekiller-932017-04-16

I am actively building a Death Star. It's planned for May/June. Hope to meet the expectations 0:)

First up some other models that need a video. Back in Business!

GWorks (author)Zombiekiller-932016-08-15

I'm not a fan of DVD's, they take so much space you know. Anyways, I did build (or try to build) something like the Death Star (and it's on my list secretly) But I need a lot of silver connectors for that. Thousends xD If I do make the DS, then it's going to be big, and it's going to be special.

Zombiekiller-93 (author)GWorks2016-08-15

Ok fair do, sorry to be nitpicky but I have notice a mistake in the description where it says Luke took down two AT-AT's in the ESB when in fact it was only one as Wedge Antilles had taken down the other.

GWorks (author)Zombiekiller-932016-08-15

I was doubting... Wedge took it down, but Luke shot it, no? I was wrong.

I see it Zombiekiller, good work spotting my mistake ;)

knex r awesome (author)2016-11-29

I can't wait to build this!!!!!!

GWorks (author)knex r awesome2016-12-02

Great! If you do, please show us some pictures and I will reward you for building it! :D

Linkin_J_Knex made it! (author)2016-09-03

So, I built it! And wow was that fun. :D The instructions were pretty clear. Although at some points it was hard to understand, and a couple of pictures were in the wrong places, I got by. Mine doesn't actually walk, it tends to fall over. But maybe it can be a dying AT-AT instead? xD

I have just made a couple of modifications:
One to the head joint, just adding a grey spacer and blue clip to the end so it doesn't sag so much.

The other modification is to each leg and it adds a 1-Slot grey connector attached to a Y clip, to the joint between the 2 leg sections (behind the wheel) I am yet to test this out, but hopefully it improves the walking mechanism. My AT-AT's legs keep bending to the sides, and the black (green sized) rod doesn't restrict the motion because the leg is twisted. instead of colliding with the lower half of the leg, it enters the space between.

So, a quite lengthy comment for you to read. Sorry! And I apologise for the comment chain. I was very excited to build this. Thank you for being such an amazing builder. Your K'nex models never fail to amaze me and other people. The ingenious mechanisms, Perfectly built models and small quirks of K'nex that you take advantage of to achieve immense detail show how great a builder you are. Never stop, please.

Next up, to build the snow speeder! ;D

GWorks (author)Linkin_J_Knex2016-09-22

Yo! I have a moment in which I can reply you. I didn't get any notifications, btw, so I should check my ibles manually for updates of comments.

Other than that: Wow! Looks good, also with the red battery pack :D I'll have a reward for you, of course ;)

Hmm, a shame it doesn't walk, and more shame that the ible isn't perfectly in order. I'm not going to talk that right, because at the end, mine also wasn't walking anymore :/
But yeah: Leg bending, all the issues you note, I had too. I couldn't put that spacer there (I wanted) cuz it limits the motion. The knee-adjustment I don't fully understand, but good that you tried that.

Haha, and awe, thanks for your kind words! I hope to build more, but busier times are coming in my life. For me it's important that you enjoyed building the model :D And you're kinda 'testing' my ible, that's worth a lot to me too! so Cheers and thank you!

At the moment I don't have time to make adjustments to the ible (correct my mistakes :( )

Linkin_J_Knex (author)GWorks2016-09-22

it's fine don't worry about it ? what do you mean reward?:0 and the leg adjustment limited the range of motion of the knee:)

GWorks (author)Linkin_J_Knex2016-10-08

reward is more pro membership! (ofc xD)

and okey :)

Linkin_J_Knex (author)GWorks2016-10-08

Wow, thanks a bunch!

Ethan1023 (author)Linkin_J_Knex2016-09-22

It tends to fall over? Sound's like Rey's "home" on Jakku.

GWorks (author)Ethan10232016-10-08

haha :P true. It´s actually like that

Linkin_J_Knex (author)Ethan10232016-09-24

Ahah, yeah :)

That didn't seem to help the walking motion. and the head one blocked it. I will still try to get it to work but won't tell you my modifications here because I keep commenting. sorry!:/

Linkin_J_Knex (author)2016-09-02

I HAVE to make this one XD I have the pieces, I WILL make it and I'll be sure to show you when it's done! ;D I love it and the fact that it moves is really impressive too. :D

picture 10 of the head is in the wrong place by the way, and so far I've had to get 2 extra mini panels. The piece count is a little off :)

GWorks (author)Linkin_J_Knex2016-10-08

I´ll adjust it now, thanks!!

I apologise for the comment chain, but you're missing a picture where you add the 1 slot grey connectors on the head.

Ethan1023 (author)2016-08-17

Nope, can't make a display stand for this one.

GWorks (author)Ethan10232016-09-22

Haha, well, you can, but the AT-AT tends to walk away :P

Ethan1023 (author)GWorks2016-09-22

Hahaha... Hey, some bad news. I lost the pictures to my Helicarrier, so I'm having to ditch that idea. Really disappointed. But, I have a way to post my Executor, Resurgence, and Imperial class star destroyers.

GWorks (author)Ethan10232016-10-08

Ooh, that sucks man :(

Hope you can post the other stuff you make/made!

Knextremely stupid (author)2016-08-15

Very cool! When I finish my current oroject I will have to build it!

Nice! Thanks :)

The Knex Inventor (author)2016-08-14

Very nice model! Favorited and voted, good luck!

GWorks (author)The Knex Inventor2016-08-14

Thanks. This, together with the Snowspeeder are most likely going to be my last models for 4 to 6 months, so you'll have to wait until I'm back with my K'NEX before I can make something new :)

The Knex Inventor (author)GWorks2016-08-15

You're welcome! Aww, that's too bad. :-( I will definitely keep my eye out for your projects in a couple of months! Have you got any planned projects that you will make when you are back with your K'NEX?

GWorks (author)The Knex Inventor2016-08-15

Here's a list of things that I still want to make:

Hope to see you back after the break, it's always nice to get comments ;)

The Knex Inventor (author)GWorks2016-08-15

Neat! I will definitely be here! Looking forward to your next project! :-) Have a nice break.

Knextremely stupid (author)2016-08-15

Very cool!

seamster (author)2016-08-14

This is so cool. Very well done!! :)

GWorks (author)seamster2016-08-14

Thanks for your feedback!! :)

About This Instructable



Bio: Hello! I am mechatronics graduate and have always had a passion for making things. This started at an early age with LEGO and K'NEX ... More »
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