I've searched and searched, but no where could I find instructions on how to make a nice, high quality, amateur throwing star. In this instructable, I will guide you through the process of making a steel shuriken for under 10$ (if you already have the tools).

DISCLAIMER: This is a WEAPON and is not for just throwing around at people, pets etc. It can SERIOUSLY injure or even KILL somebody. The blades are extremely SHARP. I am not responsible for anything that you do with this. If you are foolish enough to throw it at a person or a pet then just stop reading now.
Have fun and BE SAFE!!
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Step 1: Getting the stuff

A minimum of what you need:
-A metal plate of some sort, relatively thick. It should be no larger than 5 inches or you will waste a lot of material. I used a galvanized steel electrical box cover I got from home depot for about $0.60. This works VERY well.
-An angle tool, or something that can measure and draw straight lines exactly perpendicular to the sides of the plate
-A pencil
-A jigsaw OR:
-A hacksaw with steel cutting blades (much slower and harder)
-If a jigsaw, high speed steel cutting blades. A pack of 3 cost me about 5 bucks.
-A bench grinder or equivalent (steel belt grinder, dremel, etc)
-3/8" steel drill bit. Mine was a zirconium coated bit from a big set my dad got. You could also buy a cobalt bit, but a 3/8" one would run you about $10. Ouch
-A drill that can run at least 800 RPM, hopefully with a lot of torque
-Metal file
-240 grit metal sanding sand paper (needed to make the pencil marks show up on the plate)

-A drill press (I didn't have one so I was just careful. It isn't vital for the holes to be that precise)
-Some silicon carbide metal sandpaper (60, 120, 240, and if you want it really smooth, 400 and/or even 600 grit paper. Whatever you want to do.
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if you heat it up to red hot and throw it in water it gets harder but more brittle its a give take thing it can hold an edge or not chip or break
 actually, you want an orange heat on the steel, and yeah throw it in oil, heads for flare-ups.  also, when you're done with that, polish it with sandpaper, and then take a blowtorch to it.  the polished surface will change colors, so pay attention.  when it hits a gold to dark yellow color, let it cool and you're good to go.  don't hold the torch in one spot, though, keep it moving so you get an even temper.

depends on the steel alloy. tempering is more in-depth than that, and varries from one metal to another. there ARE charts on the internet though, if you happen to know what kind of steel you actualy have....

for the source of the plates, i'd say that'd be hard to track down. i would also worry about galvanized steel. if it's zinc plated, at the very least people do this where it is /very/ well ventilated. safety!

this is a good technique, origionally used for knifes, but it is very hard, not easily done for a person mot knowledge in the subject, it takes practice
i've heard of doin somethin similar, its just instead of water, you use oil, and it increases the carbon content of the steel, of coarse with thowing weapons you typically dont want something very brittle, due to the amount of shock force caused from impact
triumphman3 years ago
made some of these once, got a nice scar to prove it! It spun free when I was drilling the hole. Not pretty site. Red stuff on stainless steel. My own. Now I wear gloves, thick gloves, leather re-enforced gloves for welding! We learn by our mistakes and sometimes stupidity, too late! I eventually gave them away. Everytime I reached for them I got a cut! Not practical or worth the effort to make. So don't bother. Ninjas can keep them. I'll keep my 44 magnum!

i'd like to suggest to anyone who's going to try and make these that you drill the hole first.... then cut out the sharp bits. though i abhor gloves /anywhere/ near a drill or saw... for the same reason you dont wear a ring or other jewlry around power tools.

asside from the points, the sharp edges should be the /last/ thing to be put on, and that goes for anything sharp. the points are inevitable due to the shape, but dont you dare sharpen them till they're finished. and even then be careful. square edges still cut, especialy if they get caught by a drill.

very cool I will use this.
Dakota Joel987 months ago

I actually make these on a semi-regular basis, but I hardened mine with Oil, so you can throw them at concrete, and it barely dulls the blade, so with a wood target they work beautifully!

bcavaciuti1 year ago
could use an angle grinder with a cutting disk in it. if you concentrate its easy to be accurate :D
Try using a dremal for de burring. Mine was great for that. I polished mine up to a shine as sugested by pearldrummer. I was able to use it to reflect the sun light into a friends eyes befor throwing it, getting a better score because I could see the target. He could not see it as well for a few mins.
qwerty20083 years ago
Too bad these are illegal in California :(
Good thing I live in Missouri. No one cares here! I can ship ANYTHING from Trueswords to my house, and it tells you states it cant ship t
Too bad these are illegal in Holland and many country's aswell.. but in my opinion if you practice safe and without bothering anyone.. the who cares ;)
Takeda83 years ago
This has to be the best shuriken tutorial i've seen so far ;)
fkhalsa3 years ago
Using a metal punch will help your bit stay centered.
This looks kinda like a metal handle with a sharp pin coming out of it, and it's sprung load so that it will 'click' when you press it all the way down, creating a small dent in the metal.
Should be easy to find at any hardware store.
Kaiven6 years ago
I like this. I really like this. Do you know how to make poison? that would be cool to use on shurikans, kunai knives, and blow gun darts. I still can't find how to make poison anywhere...
Andyman3k (author)  Kaiven4 years ago
Seriously?? Poison isn't "cool," it's not something you play around with, you need to seriously think about what it is you're doing.

I really wish you people would quit these pointless, immature and irresponsible discussions on how to make poison to put on homemade weapons. You might as well be asking "Hey, leik how do i make a nerve agent??" or  "Do you kno where i can getz sum anthrax? It wud be kewl to have some lol"
It just seems like you people haven't used your brain to make the connection between POISON and DEATH, or what death is
 yeah, im with you man.  guys, this isn't even something funny.  these are actual weapons that could kill someone.  you could literally cripple or kill someone by screwing around with these.  as for poison, unless you have studied them extensively, and know precisely what you're doing, you could kill yourself, not whoever you're aiming for.  a knife that is poisoned enough to kill someone you don't know the metabolism and other stuff could easily kill you from a scrape across the knuckles. don't mess around with poisons guys. play it smart.
I disagree entirely. People who ask these questions should be given the information they seek. In fact, there should be a detailed instructable on how to create the poison, including a step where they should taste it to make sure it's functional. We need to quit protecting the morons and allowing them to breed.
You think I am an irresponsible kid that doesn't understand how to handle weapons.
This post is 2 years old. I'm pretty sure that I don't need poison anymore, and if I do, I already have some.
I know many people on the internet seem stupid, but at least check their background before assuming people don't have any credibility.
Well... I'm glad we got a few things cleared up.
Andyman3k (author)  Kaiven4 years ago
Sorry if it sounded like that last post was directed at you, it was more a generic message after countless email notifications of a new comment that 90% of the time were about making poison.
I rarely see a comment about the actual instructable anymore; its always about making poison ;_; and it's spamming and cluttering the comments section.
Also, i dont know how a 2 year old post appeared above the most recent comment...
If someone replies to the comment, then it gets bumped up.
No problem about the misunderstanding, happens to the best of us.
You should just turn your email notifications off.
Now now, Cowscankill, what would Mr. La'flesh think about you asking about poison?
 wow you should never compair an un-tracedle natural poison goten from a special seed to anthrax thats just wrong
easy posion would be apple seeds posionus but you need to get throught the tough outside and i dont know how potent it is but its a posion.
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actualy im prety sure theres a poison in the seeds dont know how affetuve it is though or if its worth and extracting. and nicotine seems the best by far though.
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Novur pkmn4 years ago
 ...yeah, your wrong. Sorry.
pkmn Novur4 years ago
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Novur pkmn4 years ago
Did you even bother reading the entire article, rather than just the first paragraph? Read the third paragraph. It explains why you haven't died from apple seed ingestion. Unfortunately, it doesn't explain why you haven't died as a result of your own stupidity.
harley_rly pkmn4 years ago
dude, there is a possibility there, just cause people eat apples, dont mean taht its ok to eat the seeds...i mean hell peach seeds can contain sodium cyanide sometimes, and by sometimes i dont mean 1:20,000 i mean theres actually a fair chance of coming across one with an adequate amount of cyanide
That may be so, but when was the last time you accidentally bit through a peach pit?
im not sayin its a problem that the poison is there, just acknowledging the fact that it is indeed there, and that it isnt all to crazy for apple seeds to be poisonous, it takes one batty person to go munchin on apple seeds, and peach pits
its even worse for dogs...
but anyways i have a good poison mixture step 1: open up laundry cabinet, pull out every detergent, mix step 2: take every cologne or perfume you have, mix step 3: pee in the mixture step 4: pull out every insect killer, mix step 5: pull out every cleaning materials (windex, stuff like that) mix step 6: pull out just about every other liquid in your house, mix i think that would make deadly stuff.. but i havent tried it! lol
the bleach in the laundry detergent and the ammonia in your urine would make tear gas...... than it would kill you
I thought that bleach and ammonia mixed together created mustard gas?
mixing bleach and urine is very dangerous as is ammonia and bleach. I would only do this if you have a fan behind you and you are doing it outside. even then the chemical reactions are highly toxic. once my dad was cleaning a cat box with bleach. the second he poured some in there was a loud steaming sound and he couldn't breathe very well for about 4 minutes. even the rest of that day he felt wierd. I dont know what bleach and ammonia does but I know it is extremely toxic.
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