Picture of Ballistic Knife
Hey, guys. This is an easy PVC ballistic knife I made recently. I won't be telling you how to make it, that's a trade secret, but you might be able to do it from the pictures. I used a trumpet valve spring in the demonstration picture, but I usually use a spring from an airsoft gun. Tell me what you think!
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Connor k14 days ago
What size of PVC is it
ZachShazzy1 month ago
It's awesome, ignore the hate bruh
Ravenx14 months ago
It's a pvc tube cap end dowel nail spring and pin made from a bolt on the end of a clip. Spring in back end of tube glued into cap end nail"knife" in front end of dowel compress spring put pin in hole in dowel to lock it. Point press clip. Dowel shoots out. Smoke ace go make it.
That's actually illegal

no it isn't

In the USA a spring powered ballistic knofe is illegal


dpene1 year ago
That is 100% illegal in the u.s. and the uk dont listen to people saying its not a ballistic knife propelled by a spring carries a minimum of 5 years in prison for possesion or sale a explosive proppelled ballistic knife however isnt illegal but is very restricted under the aow (all other weapon) category so if I were you I would take it appart and never build it again. Yes its cool but is it worth 5 years in prison?
Zappzipper dpene7 months ago


mcogan1 year ago

very illegal

Zappzipper mcogan7 months ago

no it isnt stupid just dont build it

AndrewM47 months ago

Ok now everyone's saying that this is illegal but I mean come on people this thing is AWESOME PERIOD. So if you don't like it then don't make it. Saying it's illegal aint gonna keep us people from making awesome things like cannons and swords that are funnily more approved than a small little knife that fits in your pocket also known as a pocket knife witch is also illegal for me to carry but I still do. So unless someone takes it from me it's mine buddy.

so true man u feel me man

Ddawg7471 year ago
The website is INSTRUCTables NOT SHOWOFFables

The website is called INSTRUCTables, don't be all hey look what i made isn't this cool? I'm not going to tell you how to make it though

I agree with jc industry

what kind of knife is it

SMOKINACE992 years ago
Please add instructions or at least send instructions to me
I don't think instructions are a good idea...
Finley371 year ago
That's awesome
Maybe a separate app called 'Idea'ables is needed then instead of Instruct! As in instructions!!
Screw everyone cracking on you. Nice ballistic knife.
neo716651 year ago
Hope ya don't get caught with that, FBI watch lists don't just go away.
HeathSM2 years ago
I now how to make it its easy really
instructions r not neaded its quite obvious how to make
get two pvc pipes one that can fit in the other
attach a knife to the tip of the smaller one
drill a hole in the smaller tube and in the larger tube so they wilk line up
put a spring in the bottom of the larger tube
attach something to the tope of the large tube like a pin to fit thru the hole in latger tube and smaller tube so when u pull it out the spring will push the small one out
Silent-Mind2 years ago
It's not a 'trade secret' to tell us how to make it, it's an 'instructable.'
Instructions pleeeeeeez!!!
really cool, but under my understanding ballistic is in relation to explosives, i read the law it says this classifies as a ballistic knife. In my opinion this should be a "spring knife" a ballistic knife should be related to an explosive like a percussion cap (from bullets or Hilti shots) despite the definition saying any knife that is a projectile not propelled by explosives. Lastly the law does say its illegal to manufacture, sell, possess or import a ballistic knife. I'm happy b/c their not illegal in Canada :D
Kona-chan2 years ago
this is really insane, sorry for saying it,
but i'm pretty sure this counts as: song distens weapon
and just not under fire weapon, but if i was you, look out next time, with posting stuff
heydiddlediddle (author)  Kona-chan2 years ago
It aint illegal, so I aint worried.
ringai2 years ago
In the US and UK, these knives are illegal for private citizens to possess. You should consider how and where you share.

Valve springs do the job a bit better, though.

spylock ringai2 years ago
Not illegal,as long as the blade isnt over two inches or double edged.
Kiteman spylock2 years ago
In the UK, that would count as a "weapon", not a tool, and would probably fall under "concealed weapon" legislation as well.
spylock Kiteman2 years ago
The way things are looking here, it dont look like it will be to awful long before things will be the same way,unless of course the people start raising hell.The so called patriot act has helped to put us in a pickle as far as our Rights go.The good thing about our Constitution,and Bill of Rights though is it can always be changed back.
ringai spylock2 years ago
Incorrect. Ballistic knives are most certainly illegal in the US:

Johnhall442 years ago
Nice simple design, it would be easy to copy. Just add to add a small model rocket motor, flip out stabilization fins and a titanium alloy for the trigger mech then you can hunt deer =P
heydiddlediddle (author)  Johnhall442 years ago
Yeah... pretty sure that's not legal. Stick with a 30-30.
Lol, it counts as a pocket knife/model rocket =P 30-30 is overpowered for deer.
heydiddlediddle (author)  Johnhall442 years ago
That's what I use...
7.62x54r, try it sometime. Its magical =P
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