Introduction: Ninja Caltrops

So, you wanna be a ninja? Well heres something you might need.

"Caltrops" - A caltrop (calthrop, jack rock, star nail or crow's foot) is a weapon made up of two (or more) sharp nails or spines arranged in such a manner that one of them always points upward from a stable base (for example, a tetrahedron). Caltrops serve to slow down the advance of horses, war elephants, and human troops. It was said to be particularly effective against the soft feet of camels.[1] In more modern times, caltrops are used against wheeled vehicles with pneumatic tires. In Japan such devices were known as makibishi.

Gotta Get them camels!

Step 1: Materials

Materials: Scissors and a peice of sheet metal about 1" X 2".
Actually the size doesn't matter but I like this size.

Or if you are using thicker metal use tin snips

Step 2: Cutting 1

Here is where the scissors are needed.

Cut 2 lines length wize from each end about 1/3 of the way (see picture)

Step 3: Cutting 2

Now

Cut from the... just look at the picture

You want the final out come to look like a squished hour glass

Step 4: Bend

Here might be the hard or easy part. If you have thick sheet metal then find something curved and hammer it into shape.

If you got thin metal from a pop can or what have you then you can just bend it with your fingers.

Postition the metal so the hour

Step 5: HURT PEOPLE!

Now! Throw it on the ground and it will always land with a point up.

If you made it with thin metal it will probly only hurt people with no shoes but if its thick you'll be ripping TROUGH CAMEL FEET!

Comments

author
TheTerrarianBoss (author)2016-08-08

through*

author
SAGE27 (author)2012-09-22

it would be fun thinking of diffrent shaps, cat, dog, space invader. I had some more ideas.

author
TheWrvith (author)2012-02-21

By definition, these work as caltrops, but I'm sure the actual Japanese terminology for them are tetsubishi.

No matter what you call them, toss some of these on the ground while some bare footed Ethiopian children are running after you, and you have a 90% chance of losing them.

You could also build a pit large enough to fall in, and place a bucket full of caltrops at the bottom, and cover the top of your trap with a flimsy wire mesh screen and cover it with leaves.

author
ninjatesshin (author)2011-11-11

that's not caltrop this is tetsubishi

author
krackan (author)2008-05-19

FANTASTIC! DIE CAMEL FEET MWAHAHAHA saddly when i fist made these i droped one (unknowingly) on the floor of my living room whilst walking about the room you'll never guess what found its way into my foot....OUCHIE! but all in all fantastic instructable and by the way i made mine very small out of super thrick metals so they hurt through shoes and i cary them in a pvc tube with a cork for being a ninja! THANKS for the instructable!

author
Kryptonite (author)krackan2009-02-01

Nooo!!! How dare you try get rid of camel feet! Fool! You will never defeat the Kryptonic Camel!!! (Me.)... hehehe, I killed superman, can you kill superman?

author
I3uckwheat (author)Kryptonite2010-04-28

Well.... I could just call on Chuck Norris!

author
Kryptonite (author)I3uckwheat2010-05-02

...Do you know how old he is?

author
I3uckwheat (author)Kryptonite2010-05-02

Yes but it is still Chuck Norris...

author
Kryptonite (author)I3uckwheat2010-05-03

That's like meeting Bruce Lee, and then meeting a decrepid and old Bruce Lee.

author
I3uckwheat (author)Kryptonite2010-05-04

What ever i was just trying to make a joke...

author
Kryptonite (author)I3uckwheat2010-05-05

He he. Joke destroyer :P

author
I3uckwheat (author)Kryptonite2010-05-05

No kidding...

author
The nerdling (author)I3uckwheat2011-06-08

i killed chuck norris yesterday i was so bored so i just killed him

author

Look at my muscles i can kill you too :D

author
Air_Assassin (author)I3uckwheat2010-12-23

Kill dog feet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! MWAHAHAHAHAHAHAHHAHAHAHA!!!!!!!!!!!!!

author

I can! Well no, not really...

author

Well... Your name is count jamez... Yeah, could kill him.

Oh god my reply has been sitting here for over a year.

author
bowmaster (author)krackan2008-07-01

What found its way into your foot?

author
FreshPineSent (author)bowmaster2008-07-05

YOU FAIL

author
bowmaster (author)FreshPineSent2008-07-08

I was kidding! I know he stepped on one of them.

author
Kryptonite (author)bowmaster2010-04-18

Well he would have had to, to try it out.

author
Kryptonite (author)FreshPineSent2009-02-01

As my good friend would say... EPIC FAIL. lol

author
ilpug (author)bowmaster2009-10-29

 heh heh, i did.

author
Kryptonite (author)2010-03-30

Easy deployable car slower downerer. Perfect!

author
The nerdling (author)Kryptonite2011-06-08

slower downerer lol

author
shdsteel (author)2010-07-28

nnnnnnnnnnnnnnnnnnoooooooooooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!

author
PJPEEJ (author)2010-06-09

How did you manage to spell through wrong?

author
makerboy112 (author)2010-04-27

There is three spikes on a clatrop. (or more) With two it would lay flat.

author
tsukiyomaru0 (author)2010-04-19

More interesting way:
Cut up pieces of a 2mm wire
All pieces must be 5cm long
"tie" then together
ensure each piece forms a 90º, even while tied to another
Voila!

*for added effect, ask someone to sharpen it or sharpen it yourself! >:D

author
skunkbait (author)2008-05-23

The best caltrops for stopping pneumatic tires have hollow spikes (Think HEAVY syringe) that let the air flow out fast. Solid ones can just plug the hole. You can keep a pile of them in your cars trunk with a remote operated deployment hatch (RC or cable operated). Let's see the cops try and catch THIS speeder!!

author
iBurn (author)skunkbait2008-10-05

....isn't that what James Bond had....? In the same car that had unbreakable windows and the entire car could be electrified so that anyone who touched it would get shocked....? God bless Q.

author
skunkbait (author)iBurn2008-10-06

I don't know. I learned that trick from my pot-head cousin with too much time on his hands, and an occasional reason to run from the cops.

author
iBurn (author)skunkbait2008-10-06

LOL The part about the hole, or the part about the RC thing that drops them?

author
skunkbait (author)iBurn2008-10-06

The hole.

author
iBurn (author)skunkbait2008-10-06

Oh, well james bond had the automatic dropper thing in his car......

author
skunkbait (author)iBurn2008-10-07

I think I saw the remote/trunk thing in the "Poor Mans James Bond" or "Anarchist Cookbook".

author
goeon (author)skunkbait2008-11-29

or just get a remote control dumptruck and duct tape it to youre bumper

author
skunkbait (author)goeon2008-11-29

That's actually not a bad idea. I mean obviously it would be best to disguise it somehow, but a simple remote operation like that might just work!

author
goeon (author)skunkbait2008-11-29

or get a mechanisam from a car that you fill the gastank behind the licence plate and have a potatoe cannon so when you fire the licence plate flips down

author
skunkbait (author)goeon2008-11-29

My son's old Pontiac has the flip down plate. I hope he doesn't see this discussion, 'cause he might try it!

author
iBurn (author)skunkbait2008-11-29

haha, I want one.

author
goeon (author)iBurn2009-01-18

want what

author
iBurn (author)goeon2009-01-18

A car that fires potatoes at pursuer's...

author
Evidenceremoved (author)iBurn2010-04-15

Pew, Pew potatoes!

author
goeon (author)iBurn2009-01-18

OK

author
goeon (author)goeon2009-01-18

Potatoe tank!!!

author

just hire a guy with a gernade launcher to sit in your trunk, bye bye cops

author
--Thatguy-- (author)skunkbait2008-07-22

If you curved the tips of these calthrops, think you could acheive the same result?

author
skunkbait (author)--Thatguy--2008-07-22

Maybe, if the metal is strong enough.

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