Purchased crate of KNEX

I recently purchased a large crate of Knex from a donation center with no instructions.  Is there an easy way to tell what kits I may have?   I have sorted all the pieces and I noticed some of the same color rods are shorter than others.  Are these counterfeit pieces or is there a reason for shorter pieces?  I can't wait to build my first ball machine. Thanks, Chris 

Posted by cmu3rd 1 year ago

K'NEX Gun: RSEC (Red's Shell Ejecting Carbine)

Hey guys! Well, here is my most recent project, the RSEC (Shell Ejecting Carbine). The title really explains it all, it is a shell ejecting carbine... of sorts. Technically, the definition of a carbine is a gun that is in rifle form, but shoots pistol / SMG ammunition. This gun does not EXACTLY fit that definition, as it shoots blue rods, which is the K'NEX equivalent of a rifle round, but, all the same, I'm gonna call it a carbine. The thing that perplexed me about this gun is it's pin pull-back length. You see, the pin pull-back length on my K'NEX Gun: Reliable (R3) outdistanced the RSEC's pin-pull length, but I'd bet you that the RSEC would get better range, even without shells. I couldn't really tell you why that is, but, more likely than not, it is a result of the barrel. The R3 has a long barrel, which may mess with the rounds, but this, the RSEC, has no barrel (I.E. the rounds are shot right out of the magazine into the open air). Let that be a lesson to us all, K'NEX barrels are pretty much useless (which may be part of the reason why K'NEX bullpups are no good). Features: Great range: 50 - 70 ft. (even without the shells) Comfortable Everything in the gun is well situated (IMO) Nice 'n short, just like I wanted it Heavily modifiable True-trigger operated Good pull-back-length Hand guard Shoots shell ammunition OR non-shelled ammo -The Red Book of Westmarch

Posted by The Red Book of Westmarch 4 years ago

Just brought some knex parts!

Yer so I just brought: 200 greenrods 50 blue rods 50 tan clips 20 hinges 32 red rods all brand new for £10.45 from www.knexusergroup.org.uk you think that's a good deal?

Posted by smidge147 10 years ago

just some pictures for people

Instructables wont let me post pictures in a comment so im going to make a topic instead just for my pictures  for people

Posted by knex mad 8 years ago

Gargamelknex: I'm back!

The last instructable was a year ago... :( Sorry about that  But..... My ballmachine "limonium" is for 80% done! I will post it in summer 2015.... More k'nex buildings is coming soon! - Gargamelknex - 

Posted by Gargamel-Knex 3 years ago

New ball machine and more

My 4th ball machine. 2 lifts, 6 paths. I also re-sorted my knex and organized them into new drawers. Oh and my cat.

Posted by bakenbitz 9 years ago

My Never Before Seen Knex Videos & Pictures - KillerSafeCracker's Voice?! What?!

These are the videos of days gone by. Oh, the things you can find deep on your hard drive!  I ran across all the videos I made to show off my knex creations.  Now I present K~SC from 2007! I'm also going to include a few pictures from random builds that never got posted.

Posted by Killer~SafeCracker 4 years ago

Large Targets

Post links to large K'NEX gun targets here! Please post the link with an optional comment!

Posted by NatNoBrains 7 years ago

Small Targets

Post links to small K'NEX gun targets here! Please post the link with an optional comment!

Posted by NatNoBrains 7 years ago

Any Ideas?

Hey, i was wondering if anybody can give me some ideas of guns to make.

Posted by didexo 6 years ago

Knex wars?

I remember reading about Nerf guns once, and there was a site called "Nerf Haven". It was a pretty popular site and they would have "Nerf wars" a couple times a year. In these wars they would get together someplace and just play with their Nerf guns. So I was thinking "Why not do this with Knex?".So who thinks this could be a possibility for the future? People could go to show off their creations, compete in contests, but the main reason to go would be to have a Knex war. It would also be a great way to answer some questions like:Are MGs worth the long reload?Are powerful single shots or guns with magazines better?Do tiny guns have a place in battle?Tell we what you guys think, maybe this could be the future of Knex guns =P

Posted by oodalumps 11 years ago

post pics of knex gun injuries!

I want to see injuries from knex

Posted by combatknex 10 years ago

Medium Targets

Post links to medium sized K'NEX gun targets here! Please post the link with an optional comment!

Posted by NatNoBrains 7 years ago



Posted by ZakS 4 years ago

Knex Gun

Nothing new but looks cool(real) This was inspired by the Buzzard Gun made by The Drum Hero(Jamie sorry for mispell) But i have taken off several parts to make it more accurate and a smoother look. I have built this over and over to find the best way this can look and fire and this way seems to be the best. Also my sight i hsve made, which is the best sight i have seen.

Posted by Alingarhs 11 years ago

Free Patches for Makers!

Hi! You can now get free patches when you post pictures on my Instructables of your completed one! Nutrition Man

Posted by NatNoBrains 7 years ago

Another new knex element sort of

I was thinking what could be fun to build... a ball machine with a dragon theme! This is something that might be improved by some of you people if you can build it by just looking at it on this video. This could also be used for something else like a plain old dragon dragon. I was thinkin of adding this to my ball machine but it could not since its more like a prototype. The grey connector thats connected to the track is suppose to move but it isn't for some reason.

Posted by rexdino5 9 years ago

Show ya face!

Who's behind the computer? For knexers only. I made a new topics so people get the point this time. You know my face.

Posted by NYPA 9 years ago

K'nex Motors/Fans

I've been thinking and I just got done watching a cool video of a super motor. Apperently I'm trying to make a fan but I guess my motor isn't strong enough to move all the gears and axles. I've made all the axles go through smooth holes and no attachments... I'll try to show pictures later.

Posted by rexdino5 8 years ago

My Final Conveyor Belt

I have made my final and 2nd Conveyorbelt. I got part of the idea from a rollercoaster booster. called "The Jespar Launch" or something like that

Posted by rexdino5 9 years ago

The best slingshot trigger

 I'm working on a slingshot gun but icant make a trigger for it could someone please leave a link for a good slingshot trigger its an 3 layer barrel(3 orange connectors)

Posted by Merugop 9 years ago

K'NEX LIM Launcher

I heard from sscoasters.net that someone made a Magnet brake. Now I wonder if you can make a LIM launcher and some people said that you need electronic magnets that turn on and off the launching machine. I was hoping to find some information for a simple thing like this. Maybe someone can make a Electric Magnet from house materials.

Posted by rexdino5 8 years ago

A couple new Knex guns of mine

Here's some pictures of guns I've made lately. I most likely won't make instructions because they use too many pieces for most people to build. Tell me what you guys think. Cannon 2.0: This cannon mod shoots rods instead of blocks of Knex. I can say without a doubt, it is the farthest shooting Knex gun out there (yes, farther than KILLERK's pistol). And no more crap-handle :3 Pump-action fully-auto: I made this yesterday. It's a pump-action that gives 6 shots for 1 pump. Because I haven't built a good trigger for it yet, it is shot by pressing down that thing sticking out of the top (shoots 1 at a time, but very quickly depending on how fast you press it) . Shoots green rods with surprising accuracy and distance. Holds 42 bullets. Doubt I will post.

Posted by oodalumps 11 years ago

DOSE any1 want to buy Knex??????

Hey well i have bin into knex since forever but now i think its time to get rid of them . there are about 10,000 to 13,000 . I would say about 80 to about 90 pounds worth of knex so if you want more info inbox me . about the price we wil discuss it in the message . im in los angeles california

Posted by golongboard310 7 years ago

Rubber Bands

Hey at my friends house his rubber bands break when we make knex guns and we think they need to be kept fresh so they don't become old so doesn't anybody have an idea on keep rubber bands fresh? Since I'm trying to keep all my guns in a show case but i don't want the rubber bands to be rotten when using it in the long run.

Posted by rexdino5 9 years ago

New Knex Gun

Hey guys I just finished a new gun and wanted to know if I should post it. I don't have any picures up yet so I didn't want to waste any time.Tell me what you think. compact 6 round stipper-clip great trigger foregrip new rail system  powerful accurate So, tell me in the comment section or send me a private message. Oh and when I mean post I mean just show it off. But, if you want instructions just send me a message. Thx!

Posted by didexo 6 years ago

SRV3 Build

Do any of you guys have built the srv3 by now? Because im trying to build it and its hard because theirs no actual  instructions for the gun, if anybody that has one can maybe have a ibles on it? 

Posted by Element Force 1 year ago

Long Time Gone

So im guessing that most of you wont really remember me, i have not made a full come back to knex but i am mainly just trying to see if i still have the main skills but im going to give it a shot but at christmas i will be stopping as i am going to try and sell my knex again but at the moment i am working on a project which i dont think many people have suceeded in doing but i have nearly finished my !! spas 12 !! so yeah i will be posting pictures but i dought i will be posting as ive used many broken peices to get it to work the way i want but the main concept is very simple i may attach a picture once its done to this post

Posted by knex mad 8 years ago

Mr. Doomsday K'NEX Gun Review

Hi, Just a quick review on the Mr. Doomsda gun! Overall score: 9.5 / 10 Ease of use: 9.5 / 10 Just a slide back, pull trigger and pull trigger mechanism. Ease of build: 8.5 / 10 Some hard bits here and there. Range: 8 / 10 Probably Short - Medium range. Painfulness: 5 / 10 Only hurts on bare skin, point blank.

Posted by NatNoBrains 7 years ago

KNEX GRENADES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


Posted by KnEx_MaStEr 8 years ago


Which one should i make? A m16 with some accessories grenade launcher maybe mag and charging handle or a true shotgun w/ mag and pump and should I post my sling shot sniper rifle with my own mech and low pieces

Posted by Katarukito 10 years ago


What do you think of rubber band guns? do we have enough or should we get more? do you think they are just not worth spending time posting because they can only go so far? post what you think about them

Posted by ironman69 10 years ago

What does you Instructables account name mean?

What does it mean? Me? I lived in New york and Pennsylvania, so New york (NY) and Pennsylvania (PA). I also lived in Ohio, so my name is sometimes NYOH.

Posted by NYPA 9 years ago

New Start

I think at this point in time of my life, ive lost my ability to create well designed weapons with knex. But Ive always been fascinated by the ball machines, and I would like to pursue further into my knex hobby to make them. But my skill when it comes to this is at rock bottom. I have no experience, and no concept on how to design anything for these. I also need to buy more parts to get started on it and be able to finish it without worrying about missing some parts. I havent gone anywhere guys, just had some time off since I couldnt make anything good. I miss all of you guys, and hopefully, I can get something going and youll see more from me :) -SW-

Posted by Senior Waffleman 3 years ago

A good place to start from

Help a newbie out, what should I look at first? I recently became very interested in the concept of Knex weaponry, and I want to build an Arsenal of Freedom for myself. However, I am unsure of which designs are better than others, or whose designs are the top of the line. Would any of you be so kind to send me links to some of the better instructables/models out there? Accesory instructions are also appreciated. I'm looking for grenades and a wide variety of guns, but I want optimized designs over all else. I leave my fate to the rest of you. P.S. While proficient with Knex, I am a tad rusty, so if an instructable is straightforward and simple to understand, all the better.

Posted by Matamane 7 years ago

Knex DS lite docking station

Do you guys think I should make this instructable? It took me a really long time to finish this to put up on here. If you want me to make this please comment and rate. If 50 people say they want me to make this then I will put it up. Guys it does have a DS game holder. I forgot to take a picture of it its in the back of the DS.  thank you guys remember rate and comment. Guys please comment I really want to know what you guys think. Or send me a message and please follow me . please give me suggestions if you have any questions please just message me i will message you back as soon as i can

Posted by soccer9112 5 years ago

whats the best knex gun to make

I was just wondering what the best knex gun to make is and what knex gun shoots the furthest/ hardest.

Posted by Mrfuzion 8 years ago

Organizing knex

Do you organize your knex? (I just did) Or do you dump them in a bucket? tell everyone if you organize your knex or not.

Posted by Liberty Prime 10 years ago

The Last Goodbye :(....

Hey guys most of you will not remeber me etc but i have used and built with knex for many years and i have sadly grown apart as to this i am selling the rest of my knex i split it in half allong time ago from arounf 30kg down to just 15.7kg this is still quite allot and fits into a large plastic box. As you have probably guessed i am wanting to sell the rest as its not being used and will give someone else some fun theres roughly 8 sets in there + a couple of thousand spares which i have bought overtime such as yello connectors green rods and others. in total i would say estimating around 20-30 thousand parts maybe more the pices are all in good used condition and are waiting to be sent to a new home. i will ship out of the uk at your i am open too offers you can pm me or leave a comment if you are intrested for a shipping quote send me a post code or zip code over pm and i willl get back to you.... i would ad a picture but a box is not very exciting if you require a picture then let me know... many thanks Knex Mad...

Posted by knex mad 6 years ago

This is just here so Kinetic can get my pics

I kinetic it would not let me post the pic on ur page so here it is in an forum. I only have one pic. So here u go u can put this in ur ible.

Posted by Knexwizard 8 years ago


Still using the same old TR8 turret? Tired of tearing apart your hands trying to replace a broken mini pin? this turret is both sturdy and easy to access the pins for easier than ever replacement the last thing you need during a war is to spend time repairing your gun with this mod not only is your turret as solid as it can be but it is also as easy to access and replace parts as necessary! i understand it uses a lot of blue clip connectors so this mod may not be for everyone but i would highly recommend this turret and use it as my standard TR8 turret

Posted by Knex Lego Maniac 6 years ago


Hi everyboody so the knex evolution seems to have reached its end however i think i have some ideas, and if everybody understands there will be enough new challenges for these types of guns. so the idea is: the bullets will be charged with energy to make them fly, not a ram rod or mechanism or whatsoever, just a piece of ammo with a rubber band on it. find a way to stack them up. this will make it harder to make a proper magazine but it'll be worth it. for example a dark grey connector with a rubber band, piled to any size of rod, attach all the rubber band to the top of the magazine and make a mechanism not to put energy in the bullet, but to release them

Posted by mahmel 6 years ago

Sorry For The Absence

Hello, You ought have noticed I haven't really posted anything in a while. That's because I haven't really had any ideas on what to build. Although I have been building, there was nothing really to show for it. Also, Im going to be unavailable for a WHILE because of a vacation. But, Im not quitting. Just thought I would tell you ;)

Posted by didexo 5 years ago

First bolt action without gravity fed hopper?

I made this true bolt action that works like the real one . instead of using gravity to put the bullet in the chamber , mine uses a ramp . Another thing new about this is the magazine is easy to remove , just press the button behind the magazine , just like the AKs , and remove the magazine .

Posted by Katarukito 9 years ago

Should I post?

This is a new gun I made after finding about Ipod Killer's "innovative" trigger system. It uses Mepain's ram and part of the Burito Master's clip for his scar gun. The clip pushes up the ammo by itself, so all ya gotta do is pull the ram then trigger. It also uses a spring to absorb the shock of the ram.

Posted by mutt256 10 years ago

Knex tracer rounds??

Is there anyway to make a tracer round with these rods

Posted by Katarukito 10 years ago

New ball alternator

Hey I was thinking about having a new ball alternator well at least a idea. I made a model on this knex modeling thing. Well how It SHOULD work is that it is encased in a cage where the ball falls down and a motor will be turning the fan like things. Underneath the fan there might be 1-4 ball path. The fan will move and thus it will make the ball fall randomly in one of the 4 paths. I'm running out of pieces and I don't want to take apart my ball machine that i'm making so you guys can try to make this is you want. It might also be hard to see the yellow rod behind the red one.

Posted by rexdino5 9 years ago

UPDATE 24/1/10 (now with video)

So this is just an update of what I have been up to in the past few weeks I have 3 new guns to show you today which include (1-4) lever action rifle( i will get a video up soon to show you it in action ) (5-6) new turret gun with clean finish ( as in no blue rods at all sticking out of the sides ) (7-7)modified dunkis's oodammo pistol made into normal single shot pistol video here http://www.youtube.com/watch?v=rSss1Q3T4NQ  posted lever action rifle here is a link https://www.instructables.com/id/Lever-Action-Rifle/  

Posted by knex mad 8 years ago

Fave Knex Gun?

What is your fave knex gun?

Posted by Hiyadudez 8 years ago

Do you think people are too quick to rate something 5*s?

Hey there guys. We all know that getting to 5*s with a kne'x ible used to be quite hard, say a year and a half ago. Now, there are so many knex guns with 5*s its impossible to count! How? I will list a few of the reasons. 1) 'Ye of little knexing experience' are simply voting 5* instantaneously if they think it is remotely good. 2) There are simply too many members doing the above! 3) Nobody really knows what not to rate high anymore :-/ The 'Knexperts' of ibles are producing top quality work, that is being treated frankly the same as something that is not so top notch! Therefore, I propose that we formulate an instructable that would show people what we think work should be rated on. We need to get rid of ratings like 'Wow! First Derringer! 5*'  - Don't you think?! Please also comment on things I need to add to the list!

Posted by RMConstruction 7 years ago