Picture of DARC - Defence Attack Rescue Claw
DARCsheet (21).JPG
Got this idea after an internal brainstorming about the question 'What kind of tool would I like to have if I was burried alive?' Call it The Dark Side Of Myself...

This question implicates multiple if's:
- waking up on time (oxygen stuff)
- no panic (stay cool, it could have been worse)
- hands-free
- large coffin, not yak-proof
- tool not confiscated

Supposing it's my lucky day - after being burried of course - wich tool would it be?

A lot of ideas flashed through my head, but finally my poisoned mind came up with this DARC: a minimalists neck knife aka survival knife. Made to free yourself - not necessary out of a coffin, to defend, rescue, survive or attack. Or simply open a beer bottle - in Belgium we call it 'urban survival' ;-)

Or how a stupid idea turned out into an all-round survival tool...

Easy to make, reliable, solid, yak-proof!

Have fun with it!

All you need:
- a piece of carbon steel
- angle grinder
- drill
- dremel
- band sander
- hand sander
- a lot of sanding paper
- safety gear

Want the pdf-template? Load it down, it's here!

Want the sheath-template? Just load!

Step 1: Design

Picture of Design
Print out the pdf-template and glue it on a piece of carbon steel, ceramic or whatever (vectorised jpg).

I based my model on a piece of carbon steel - the tip of a machete I demolished to make another knife.
After a lot of try and error with cardboard I came up with something satisfying I copied on the piece of steel.

Golden rule: waste-steel doesn't exist!
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kuruvar4 months ago

Really nice!!

badideasrus4 months ago

lol.... using hte drill press as a punch... that's... brilliant. where did you get a medical needle?

also, for those of you that dont know, it's much better to punch a hole in leather with a spike (like a needle or an awl) than it is to drill a hole, because the punched hole will be tight and keep the thread tight too. ((so i'm told at least XP. much reading indicates!))

Digital Flame5 months ago

Ok, first off, AMAZING! A lovely knife; with a brilliant shape, size and design! I will definitely make one! Favorited!

cford79c4 made it!8 months ago

I made a version of this on a 3D printer. it actually cuts pretty well and has a bottle opener and a screwdriver in it.

bricobart (author)  cford79c48 months ago

That is really really awesome! Sounds like a super lightweight tool in your survival kit, very nice build!

ffernandez indiano made it!8 months ago

I dont know why, but i made it

bricobart (author)  ffernandez indiano8 months ago

It rocks! Good job!

nemo132 years ago
a Wooden Vesion
aerdna12 nemo1311 months ago

your wooden version looks really cool with all the designs

nemo13 nemo132 years ago
Your wooden version of this is just plain cool!
Chandler081 year ago


jpender11 year ago
Not sure if this was mentioned did you use the metal from a bill hook machete
yokxi1 year ago
What does "yak-proof" mean?
aregan1 year ago
I've just made a plastic one what do u think
13, 6:52 PM.jpg
bricobart (author)  aregan1 year ago
That looks pretty nice, undetectable ;)
triumphman2 years ago
You should try my lawn edging plastic for some substitute Kydex sheaths. See my 'ibles. I made afew sheaths and they work well, and the cost is minimal compared to Kydex and the hardware it requires. Thank. Love your little knife!
In the 4th picture, are you holding the sharp part into your palm? Or is it not sharp enough to cut you?
bricobart (author)  TheNerdWhoBuilds2 years ago
You're right! The zone around the finger hole is not supposed to be sharpened. I sharpened only the zone that's covered by the sheath, more or less.
MMoyce2 years ago
Dam good 'ible' 5/5 4 sure!!!
bricobart (author)  MMoyce2 years ago
I don't wanna make one. Start an Etsy site and sell me one! :D
bricobart (author)  doctressjulia2 years ago
Nice try! I don't have time now, I'm building a flying fortress in duct tape ;-)
triumphman3 years ago
Check out some of my knives, I used the same type of drilling attack and keep finding new shapes to make! Just started a double ended throwing blade, its coming along nicely, 8.5 inches total length. I recently got two big mill wood cutting blades at a flea market. 26 inches accross by 5/32 " thick. Ten dollars each. I could not pass those up! Really good steel and thick too. Flea markets are great. I use a 4.5 " angle grinder to cut out the basic shape. Then drill press, and dremel for final detailing, and of course a 6" belt sander. Thanks for sharing your ideas. Check out my instructable sheaths and knifes. Cheers. Triumphman
bricobart (author)  triumphman2 years ago
Thanx for your support mate. Since a lot of time you'll find me on flea markets too ;-) I never saw your type of woodcutting blades, not yet, but I got a huge collection of old rusty butchers axes: great steel!
triumphman3 years ago
I love it! Awesome dude!
bricobart (author)  triumphman2 years ago
Thanx mate, don't hesitate to post a picture when you made your own!
MacTheHero3 years ago
don't suppose you're selling these on etsy or someplace.
bricobart (author)  MacTheHero3 years ago
I've never been running after the money - maybe I should have so ;-) - and I'll just make a few darcs this summer for some friends. We'll make a bloodyak gang, haha!!!
No commercial intentions, sorry. But thanx for the compliment!
I would just love somethign like this for a costume, but dont have the necessary tools for it.
bricobart (author)  MacTheHero3 years ago
If it's just for a costume, why not making it in plastic?
conrad01023 years ago
How do I know what carbon steel is? Would like a lawn edger have a carbon blade? I find those edger blades everywhere when I go for walks. Would That work?
One easy way to test for high carbon content is to take a grinder to the piece of metal in question. If you have a piece of high carbon steel, you will get lots of sparks that look like they're branching out. Check out this pic for an illustration:


Also, check out spark testing. Sparks can tell you a lot about the type of steel you have.
bricobart (author)  conrad01023 years ago
You can use ANY steel you want, this tool is no rocket science!
My best tip: buy a kitchen axe or garden machete or just take an old rusty butchers axe AND CUT IT DOWN!
One more thing: have fun conrad!!!
seraine3 years ago
Great Instructable! However, there is a small typo. It would be sheath, not sheet.
bricobart (author)  seraine3 years ago
So sorry, thanx for 'unridiculising' me ;-)
Remove the temper from the steel by heating it red hot and slowly cooling it. I bury the piece in a box of lime. it will be easier it work with. You can then restore the temper by reheating and quenching in oil or water. i like using old auto leaf springs for knife making.

Right on the money. I looked down the list of comments to see if anybody had mentioning heat.

I would heat it on either a charcoal or gas grill and pack it in ashes. You will save a huge amount of effort when you are cutting and shaping. (Wait hours before you try to pick it up - it will stay hot a long time.)
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