Crossbow bolts

Crossbow bolts are considerably expensive. I just invested in a crossbow and I'm looking for a cheap way to make practice bolts. Given many tutorials out there that explains how to melt aluminum and how to cast things from aluminum, I was wondering if someone instruct us on how to properly create a crossbow bolt (and arrow)

Topic by DreamPhantom 4 years ago  |  last reply 4 years ago

What is this? Bolt thingamajig?? Answered

What is this thing? I found this while hiking. It was half buried in the ground. It has two huge M20 Bolts, One is a left hand, And one is a right hand bolt. I suppose that it has soemthing to do with cars I have attached a couple pictures below. What is this?

Question by Yonatan24 2 years ago  |  last reply 2 years ago

Bolt actions, and mine

I've noticed there are alot of "bolt action knex gun"'s, and it really ticks me off when I click to see that they're simple ram pull, please, don't call them bolt actions. Also, still got my semi auto, made a very close to true bolt action (the breech doesn't open when the bolt is pulled back) its my 2nd bolt action, also, once I've posted my Semi auto V4 and my Bolt Action v2, I'll make a single shot, (or mag fed if I'm lucky) that when the bolt is pulled back it exposes a breech to put one or two bullets in, this will be shellfed, so you can't exactly shout about the singleshot. Thankyou for reading this, Yerjoking

Topic by yerjoking 10 years ago  |  last reply 10 years ago

On the sizing of nuts and bolts? Answered

When a hex nut is referred to as "X"mm, is that measured to the ridges of the thread (the green line on the image, or into the troughs of the thread (the extra red parts of the line)?

Question by Kiteman 6 years ago  |  last reply 6 years ago

Buying nuts and bolts? Answered

Can someone point me to somewhere where I can buy nuts and bolts? I need them to be up to a few cm long, and about small enough to fit through the hole in a TO-220 transistor.  I tend to use them a lot, not just for fixing transistors to heatsinks, but my local hardware stores don't have them Also, I'm looking for those small plastics bits (look like a very small and short bit of pipe) that fit into the TO-220 transistor's hole, before you put the bolt in, electrically isolating the transistor tab from the bolt and the heatsink.

Question by .Unknown. 6 years ago  |  last reply 6 years ago

What type of bolt is this?

Is there a special name for the sleeve like bolt with an inside thread that's used in some scooter axles? I've tried searching for them as 'sleeve bolts' with no success, I want some for a project but the scooter axles are too short for my application...

Question by ambientvoid 11 months ago  |  last reply 11 months ago

What are hanger bolts for?

Question by sortofclueless 8 years ago  |  last reply 8 years ago

Airsoft Bolt Action?

I was wondering on how to make a bolt action for an homemade airsoft gun. Im open to any suggestions

Question by JuriusV 6 years ago

Bolts That Fly Straight

I just made a crossbow from Lego (not much fire power but it works) and I have been firing pencil from it but they hardly go straight. i tried adding cross fins and even an elevator hoping that it would be stable but it isnt working so if anyone has any ideas fire away.

Topic by blckthng 11 years ago  |  last reply 11 years ago

Is there a difference between a 1/4 inch x 20 bolt and 1/4x2 bolt?

I'm trying to make a camera neck strap using parcord and one of these bolts.

Topic by LAPIII 3 years ago  |  last reply 3 years ago

True bolt action sniper

Ok so i got fed up of people saying that they're guns are bolt action when they arent. so i got this idea that an actual bolt action mechanism would have some sort of carrier that would pull the ram back and then return to the forward position. so what do people think?

Topic by phlorgan 11 years ago  |  last reply 8 years ago

My Bolt-Action Mech

Pretty much all of this morning for me was spent designing a real, true, bolt-action mechanism. I had my dad help me by telling me how bolt-action guns work. I doubt I'll add a magazine to this for shells, but if I can, I will. Anyways, here's some pictures. Video explaining concept and everything coming around 6 PM tonight CDT (GMT -6) So in about 6 hours.

Topic by Raikou-san 9 years ago  |  last reply 9 years ago

Lowney's Bolt Action Pistol

Some people wanted me to post  Lowney's Bolt Action Pistol but iam a little lazy so i just make a forum topic. ATTENTION: THE LAST PICS ARE THE MODS! THE FIRST ONE:add white rods. the 2th one:y cons on the bolt

Topic by cool bas3 9 years ago  |  last reply 8 years ago

Knex bolt action mechanisms?

Could anyone post a link to a bolt action mechanism or gun that doesn't require too many pieces. I have already tried the zkar v2 and the ar-4 but I didn't have enough pieces. I do not have any ball socket pieces and I only have one hinge pair. The ar-4 required too many tan locks. I also do not want to break any pieces. If there is not anything which can help me please post a link to an instructables of good, powerful gun that does not require many pieces, preferably a rifle. Thanks

Question by Hewwo... 7 years ago  |  last reply 7 years ago

what is the bolt action mechanisim?

Making a gun

Question by L1keABoss 7 years ago  |  last reply 7 years ago

T.B.S (Thunder Bolt Series)

Here it is every one, The first of many guns in the Thunder Bolt Series.

Topic by Killer~SafeCracker 9 years ago  |  last reply 9 years ago

Concept for Pump + Bolt Action

I had this idea for awhile. Basically you combine the pumping action of a pump and the loading action of a bolt action to get something with a high RoF and high power without needing a turret. The idea is quite simple really. My idea is to have a bolt loading pin attached to a pump that contains the magazine. when you pull the magazine back far enough it will load a round into the chamber. When you move the pump back the bolt pin will push the piece of ammo forward with it. Anyone feel up to making something like this?

Topic by TheDunkis 9 years ago  |  last reply 8 years ago

My Bolt-Action Rifle

This is what I just posted. Great range and holds twelve blue rods. Hope you build it. :P

Topic by KamikazeSniper360 11 years ago  |  last reply 11 years ago

Removing seriously rusted bolts?

I picked up this old and weather worn but nice bench at Goodwill.  Made of REAL materials, metal and wood.  No plastic!   The first link below shows the whole bench.  The slats are deteriorated and if I can't rehab them I will look for a hardwood pallet to repurpose.  The problem I'm facing is that the 1/4" steel bolts attaching the slats have rusted.  I will replace these with stainless steel bolts, but I first need to remove the rusted bolts, without damaging the frame or further damaging the wood.  The other two links show the two sides of the bolts.  I think these are beyond loosening with WD-40.  The best I can think of is to grasp the back end of the bolt with a locking plier and drill through the head with a 1/4" bit.  If you know of a better method, I'd like to hear.   Another question is, once I have this bench rehabed, it will be sitting where it gets exposure to the sun for most of the day. What is the best clear coating that I can apply to preserve the wood under this circumstance? Bench Screw (front) Nut (back)

Question by LesB 6 years ago  |  last reply 6 years ago

Needed: Nuts, bolts and wire

I live in a very poor community and don't have any spare money for parts and the like. I am trying to make a piece of art similar to one I had seen in a doctors office. It was a picture of a train made from parts of a clock. I am making it as a gift for my friend for her new house. I need some nuts, wires, and bolts to finish it. Can anyone refer me to a site with free parts or does anyone have any spare pieces lying around that they aren't going to use? any parts are welcome!                                                                                                                                                                                                                                                  The Dreamer

Topic by TheDreamer 6 years ago  |  last reply 6 years ago

R5, Bolt Action Carbine

Hey guys! After the "rebuff" I received from ZakS and FlyingFish10 (and more kind comments from TheDunkis and Raz1r Knex Bull3t) about how my K'NEX Gun: Declaration (R2) looked just like a ZKAR (to which I disagreed), I decided to rebuild and heavily edit my K'NEX gun Declaration (R2), changing the body and mechanisms so heavily that the comparison between it and the ZKAR would be virtually non-existent. After about three days of hard work, I have finally come up with this gun, the R5. With a brand new trigger mechanism and bullet transfer system, this gun is ENTIRELY different from any other bolt action gun you will find. While the bolt itself is heavily similar to the ZKAR / Zaktangle, almost everything else is entirely unrecognizable (except the magazine, that's a pretty standard yellow rod magazine). Features: Brand new trigger mechanism Brand new bullet transfer system Heavily edited (and improved) pin guide setup Comfortable stock Very reliable New magazine setup, with magazine breach Comfortable grip Flip-up back sight Great range: 50 - 70 ft. Preloadable magazine Internal magazine pusher 12 rd. magazine (could be increased) This version is by no means finished, but when I do finish it, I'll be sure to post a full set of instructions. Check out the image notes for more info. Tell me what you guys think I should change or add to this gun. I'd love to hear your comments. Quick Tip: When you have a magazine that is full of rounds try and make the last round different in some way, so that when you shoot the gun you know when the magazine is empty. This will prevent you from shooting the magazine pusher, and make it so that you don't have to keep track of how many rounds you've shot. -The Red Book of Westmarch

Topic by The Red Book of Westmarch 5 years ago  |  last reply 3 years ago

Good bolt action knex gun? Answered


Question by thomaswatton 9 years ago  |  last reply 9 years ago

looking for universal frame website

I have been searching for several days trying to find a website. It is a framing system that is used for loft beds, pedal cars, and any number of things. I think it is a .org. It uses holes in square members and the way it is bolted together is very strong. Help!

Topic by sundy58 9 years ago  |  last reply 7 years ago

Knex Bolt action ACR Video Link

Here's a link to a video of my ACR mag release demonstration.

Topic by knexguy 8 years ago  |  last reply 8 years ago

How to make a knex gun with a real bolt mechanism?

I am planning to make a new knex gun. This gun is going to have a real 'bolt' which is used to load the next round. It will be pulled back and released which will push the round into the barrel like a real gun. The firing rod will be the same as usual but when firing, as the bullet is further forward would result in the bullet being hit rather than pushed leading to better energy transfer and better firing. I have experimented for a while but cant quite seem to get it to work properly other than the general mech. So if anyone has done anything like this or knows someone who has then please share. Thanks.

Question by White Shadow 7 years ago  |  last reply 7 years ago

Where to find 10-32 2-1/2 special bolts? Answered

I need a very wide head 10-32 bolt for a project I am working on, because a small head does not hold enough friction against my other part for my needs. The best solution I think would to get a 10-32 carriage bolt (2.5 inches long), but I cannot seem to find this anywhere. Is there a store anywhere that sells low quantity (I need about 5, but could settle for 10-50 if I needed), but I cannot seem to find a store that sells this apparently odd screw size...

Question by astroboy907 6 years ago  |  last reply 6 years ago

I need to create some type of gadget that will automatically loosen and tighten a bolt or screw for me at certain times!

It would need to be attached to a thermostat or timer that will automatically loosen and tighten a bolt or screw when it hits a certain temperature or at a certain time. Any ideas?

Question by 10 years ago  |  last reply 10 years ago

My newest gun

This is what I have been working on. It has a bottom rail, front sight, true trigger, bolt action mech, removable storable mags, and a ROF that is zkar or greater. Discuss. Also, help me name it. leave your suggestions in a comment below.

Topic by rec0n 8 years ago  |  last reply 8 years ago

What is a bolt-action k'nex gun? Answered

 I realize it separates the bullet from the rest, but how does this work?  Could somebody make me a diagram?

Question by MotaBoi 9 years ago  |  last reply 9 years ago

What does bolt action mean??? Answered

Well I have recently began to build knex guns but Im not sure what some things mean like: Bolt-Action True-Trigger Firing pin Ram

Question by K-Dawg 9 years ago  |  last reply 8 years ago

need help with my 303 bolt Answered

I can oly get my bolt in half way than it just gets to tite

Question by jerry303 7 years ago  |  last reply 7 years ago

Thermal epoxy or Thermal grease and bolts?

I am mounting 15 Cree LEDs to get an old overhead projector to work as a video projector. the only thing I am wondering is whether thermal epoxy is better to use than thermal grease with bolts and nuts attached to a heatsink. Do both have the same heat dissipation? What I am trying to do is still use the LEDs for use with other projects in case i need them for something else.

Topic by KT Gadget 9 years ago  |  last reply 9 years ago

TBOS (Thunder Bolt Oodammo Sidearm)

Here is my newest, and best pistol so far. It has a great range and accuracy. Check it out!!Killer~SafeCracker

Topic by Killer~SafeCracker 9 years ago  |  last reply 9 years ago

DM-15 bolt action sniper

Well, all the great K'nex gunners have snipers(besides oodalumps , but his semi-auto makes up for that :-) ), so I thought i would make one. its nothing really new, nothing innovative. Just that it has a bolt to pull back the ram, that allows for rapid fire. It's could be as powerful as the other snipers but i can't put to much power because i have to pull the ram back with one hand(i am wimpy so you guys will have more power). it has a 9 round mag that could be extended if you wanted. Has a block trigger hooked up to a true trigger. The front is just a make barrel. Bipod folds up and hooks onto the front of the fake barrel. i am sorry that the bolt is hard to see in the gun, it on the right side. only the left side is shown in the first two pics. its in the third pic but is kind of hard to see. it works by having a "door" in the side of the barrel for the bold to travel in and out of. the bolt need tape because the orange connectors would come off instead of pulling back the ram(the ram is the same from the pack sniper). it has just your basic scope on it, nothing to new on that part. yea, i think thats it. instructions are being made.

Topic by dsman195276 11 years ago  |  last reply 10 years ago

S2 Bolt Action Pistol Review

When joined Ibles, I knew that I didn't have any guns ready to upload, so, I decided to post some reviews, being that I already had some  guns built. The S2 pistol by  Sharir1701 seemed to be a logical choice, so I grabbed some blue rods did a little bit of testing. Please realize that even though I have just joined the site, I have a wide range of experience with knex guns, such as the ZKAR, TR8, Racker Rifle, and many of Red Book of Westmarch's replicas. In this review I am not going to do the ratings on a scale of one to ten, because Knex guns differ so much. Say you have a gun that shoots 70 feet. You give it a eight out of ten, because that is great range. However, the SRV3 shoots 500 feet, so 70 feet is NOT eight out of ten any more. Due to that, a truly honest review would rate even very nice guns quite low, due to the fact something will probably is better. If you don't understand this, that is OK, because I do, and I am the one writing the review. Also note that this one has Sharir's pin guide holder thingy. Anyway, let's jump right into the review! RANGE:  Frankly, this gun does not live up to Sharir's claim of 100+ feet. I only got 65-70 angled using two size 117 bands, which is still great range for any gun. Sharir says that it will only get that range with three bands. Sometime ago, I used 3 and did not 100 feet. I don't remember what exactly I got with three, but I am sure it didn't get past 75-80 feet. RELIABILITY: This is one of the gun's good points. Knex bolt actions don't have a great reputation for being reliable, but the S2 works nice and smooth. When I decided to review the pistol, I thought it would be nice to test the reliability and give ya'll the numbers. Here they are. I put the gun through two hundred rounds, and it had: 3 failures to fire, 4 failures to load, the pin guide broke twice, the bolt broke once, and the chambering rod popped out of the bolt twice. Now this sounds REALLY bad. However, the pin guide issues, the chambering rod issues and the failures to load were my fault.  The pin guide and chambering rods broke when I was jerking the bolt back too vigorously, and the rounds that wouldn't load were because I was manually  chambering the round, instead of having a return band chamber it. after I added the band, no trouble. ROF: Now this is one part I didn't really test. It charges slower then a ZKAR, but faster then most pin guns. It is good enough for most uses in a Knex war. COMFORT: Pretty comfortable. The handle is quite good, and I think it would be even better for someone with larger hands then mine. The problem is that there is not really a good place for your other hand to go except for the magazine, which doesn't make the best handle. To be truthful, it is kinda awkward to hold. It is too big for a pistol, but doesn't have a stock like a rifle. (Ok, you COULD use the pin guide holder as a stock, but it doesn't work that well) CUT PARTS: The gun is fine when it comes to these. There are several recommend, but you only need one cut gray rod for the chambering rod. ALL IN ALL: This is an awesome gun. not too many pieces,  looks kinda cool, and is fairly accurate. The ammo is blue rods, and i have a couple hundred of those, so it works great for me. Range seems about right, and it is very fun to shoot. In a war it would do pretty good, but the ammo is hard to find in the grass. The mag is a bit small, holding around 13 rods due to the mag pusher taking up quite a bit of space in the mag. This, a TR8, and a ZKAR would make a fine war arsenal.

Topic by CorgiCritter 4 years ago  |  last reply 4 years ago

Vice CKG Bolt Action Rifle

I haven't posted anything for a few months, and I decided to begin work on something that would blow everyone away.  My goal was to create the most efficient, most power, most versatile mag fed knex rifle ever.  I discovered a way to do that when I came up with the Bullet Transfer System (BTS) that you saw in my BTPA pump action rifle.  However, the BTPA had a several drawbacks.  The first was the size of it.  It was just way too big.  Second was that the ammo it shot was connector ammo, and would start spinning out very quickly.  Last was that the ram barely had any time to accelerate,  as the bullet was placed right above the handle.  I suddenly thought of a design that would solve these problems, quickly drew them out, and began work.  The result was the most efficient, versatile, and powerful mag fed gun ever made, the Vice CKG.  CKG stands for Compact Knex Gun, and I am truly proud if it.  The trigger is a variation of Zak's so I give him credit for that.  So exactly how efficient is this gun?  I was able to get 60+ feet with a string of two #64s with the long range round.  The yellow rods get around 50 feet, only because they spin out after a while, but with two #64s unsharpened yellows can go right through a box from a few feet away.  What's the secret to this incredible efficiency?  First off, the firing pin is a grey rod+a gray connector long, giving it that extra room to accelerate.  Second, the trigger is as far back as possible.  Third, the rods are placed as far away from the ram, giving it time to accelerate.  Finally, the BTS allows the bullet to stay in place with nearly no contact between the bullet and the gun.   THIS IS THE MOST POWERFUL, EFFICIENT, AND VERSATILE MAG FED GUN OUT THERE. (I know that statement may sound a little bold, but I am very confident in saying it) Pros 60+ feet range single shot with two #64s 50 feet range with yellows with two #64s Extremely versatile (perfect for long and close range) Looks great 15 yellow rod mag capacity You will dominate the battlefield Cons Reload time (for me anyways)   This video is a little out of date, I have made some upgrades since it was made/

Topic by Kinetic 9 years ago  |  last reply 5 years ago

how can we test metal thread with the help of light

Hello everyone pls if some one can help and guide i want to build a device which can scan the threads metal bolt automatically after threading the metal in machine weather the thread is right or wrong i think it is possible with the help of light please if some one can help and guide Thanks in advance

Question by Singh 10 years ago  |  last reply 10 years ago


Https:// Would there be a way to make the lock, code protected, so like if there was a little keypad or something connected to the deadbolt and put into the door, would there b e a way to set a code to open and close the lock?

Topic by astrozombies138 11 years ago  |  last reply 11 years ago

Why is a bullpup style knex gun less powerfull then a normal bullet-trigger-pin gun? Answered

All the bullpup guns i made were very weak and someone told me it was because of the magazine was behind the trigger. is this true and if it is, why?

Question by Knex.X 7 years ago  |  last reply 7 years ago

Barackuda Internals

Alright, I grabbed some more internals for the latest version of the Barackuda. I can't believe it's already been over a year since the last time I updated my status update thread. It's sad that nothing much goes on here, but I'll still maintain activity as long as I have ideas. I bought a home in the summer and have since been doing adulty things but I've been looking for more hobbies, so I'm still interested in doing a K'nex gun building guide series for newbies. I otherwise haven't built much. But anyway. For those that don't know, which I imagine are few, the Barackuda (portmanteau of Barack as in Barack Obama and barracuda) is basically a compact bolt action repeater with a small, removable drum magazine. I believe this is the first time a magazine like this has been successfully implemented on a weapon. I spent years figuring out the design and trying to perfect it, never quite satisfied, but I really need to just throw it out there. I'll get full instructions eventually. Hopefully these will do for now. Sorry if some of the pictures ended up sideways. I was using my phone and rushing. Let me know if you'd like any other pictures.

Topic by TheDunkis 1 year ago  |  last reply 1 year ago

B.S.R. 75 bolt action spud gun

This is my latest creation a breech loading bolt action spudgun. video at.....

Topic by spudrouge420 8 years ago  |  last reply 7 years ago

Bolt Action Mech for a Knex Bullpup Gun.

This is an idea that I have had for a while now, it allows a bullpip gun to have a full black rod pin but with a more realistic design. the idea is using a shotened bolt that moves right back then pushes the ammo into the chamber. I'll see if I can get a pic up of what I mean

Topic by Fred the Penguin 9 years ago  |  last reply 6 years ago

BAP-31v1.4 (True Bolt Action Pistol)

Here is my true bolt action pistol. It is pretty small for a true bolt action but pretty big for a pistol. It is also pretty ugly but it has to be like that with the mag because it uses gravity to operate. The trigger is TheDunkis' trigger from the TDS2. Pics: 1:The gun 2:TheDunkis' trigger 3:Firing pin and bolt forward 4:Firing pin and bolt back 5:Firing pin back and bolt forward 6-8:Internals

Topic by jollex 10 years ago  |  last reply 8 years ago

M200 Sniper Rifle (With *REAL* Bolt Action!)

This is my new sniper rifle. It has real bolt action, but does not shoot. When you actuate the bolt, it loads the shell. When you pull back, it ejects and loads the next. The mag is for show, but there is a 5 round internal mag. If anyone would care to mod it to shoot, I would be thankful. Should I post anyway though?

Topic by The Knexpert 10 years ago  |  last reply 8 years ago

How to tighten nut with bolt in jump rope?

  well im trying to make my own jump that have bearing and more similar like buddy lee jump rope, i using eye bolt and old jump rope handle to make it look a like, so my questions is how to tighten the nut in the small jump rope size(inside the jump rope), if you can see from the picture let say i took the rope from that jump rope and replace it with the eye bolt, so put nut inside the jump rope handle, but the problem is right now to tighten the nut from the inside. any suggestion.

Question by hore 6 years ago  |  last reply 6 years ago

how to take of a lawnmower blade with a stripped bolt?

I have to sharpen my lawnmowers blade but the bolt wont come com i tried vice grips socket wrenches an even trying to get it of with a torch but none work any suggestions

Question by mclovin7596 9 years ago  |  last reply 9 years ago

Bolt snapped off in flywheel, how to remove it?

Hi everyone. I was replacing the pressure plate in a nissan navara with a td27 engine. One of the bolts that holds the pressure plate to the flywheel broke. So we drilled a hole and used a easyout. However the drill bit wandered so the hole touches the side of the thread. As a result the easyout wont work. The hole barley scrapes the side so the thread only looks slightly damaged, but ok. Have also tryed getting a punch on the edge but that wont work either. Any ideas on how to remove it?

Question by David97 4 years ago  |  last reply 4 years ago

Shall I build the ZKAR V2?

Question by MegaMetal8 8 years ago  |  last reply 8 years ago


 This is my newest project-the BTPA-7.  BTPA stands for bullet transfer pump action.  This gun brings out the new year of innovation, as it is my most innovative and successful gun yet.  It is a bolt action gun, making for superior efficiency, combined with a pump, making for a high ROF.  Unlike other bolt action guns, however, this gun uses a pusher to transfer the bullet to the firing chamber, and also unique to other bolt action guns, the bullet stays there until it is fired, no matter how you shake or tilt it.  Right now I have most of it done, but do not have the pieces for the ram guide, which is crucial to making the gun fire successfully, keeping the ram in tact as it is pulled back.   Here is a video of the bullet transfer system: And here is a video of the gun with the pump (I also removed some pieces that were getting in the way of the trigger so now it works perfectly) Let me know what you think.

Topic by Kinetic 9 years ago  |  last reply 8 years ago

How to make a cross necklace out of nuts and bolts?

Question by 10 years ago  |  last reply 10 years ago